Sibel Sayiner

Observer

DISC Type : ci

Head of Customers at Valerie Health

San Francisco, California, United States

Overview

Sibel Sayiner is a healthcare leader focused on scaling health-tech companies. A graduate of Stanford University with degrees in Bioengineering and Classics, she was the first hire at Marley Medical, building it from the ground up. She is now Head of Customers at Valerie Health, leveraging her expertise in operations, product, and go-to-market strategy.

Outside of her primary career, Sibel has a background in creative pursuits, including spoken word poetry, and has published articles on how physical environments can foster innovation and creativity within organizations.

She holds a patent for a machine learning system designed to help manage and optimize asthma therapy treatments.

Personality Overview

Assertive

Example Seeker

Value Driven

They are generally good communicators and can be hard to convince. They ask a lot of questions and rely heavily on information and collaterals. They can sound friendly and charming but can quickly change gears to become inquisitive and probing.

Topics They Care About

Healthcare GTM Strategy

Expressed a keen interest in digital health go-to-market strategies, particularly B2C2B approaches, during her time building and scaling Marley Medical.

AI in Healthcare

Her current company, Valerie Health, utilizes an AI system to reduce administrative work. She also co-invented a patented machine learning system for asthma therapy.

Early-Stage Ventures

Has direct experience building companies from "zero to one" as the first hire at Marley Medical and now holds a key role at the recently series-A funded Valerie Health.

Healthcare GTM Strategy: Expressed a keen interest in digital health go-to-market strategies, particularly B2C2B approaches, during her time building and scaling Marley Medical.

AI in Healthcare: Her current company, Valerie Health, utilizes an AI system to reduce administrative work. She also co-invented a patented machine learning system for asthma therapy.

Early-Stage Ventures: Has direct experience building companies from "zero to one" as the first hire at Marley Medical and now holds a key role at the recently series-A funded Valerie Health.

Media Appearances

Sibel has no verified media appearances

Work History

11-2025

Head of Customers at Valerie Health

11-2024 - 10-2025

Chief of Staff at Valerie Health

4-2024 - 11-2024

VP of Business Operations & Product at Marley Medical

10-2021 - 4-2024

Director of Commercial Strategy at Marley Medical

5-2021 - 9-2021

Director of Product Marketing at Propeller Health

Education

2014 - 2016

Master of Science (M.S.) from Stanford University

2012 - 2015

Bachelor of Science (BS) & Bachelor of Arts (BA) from Stanford University

More Information

Social Presence :

Prographics :

Exp : N/A Location : San Francisco, California, United States Job Level : N/A Designation : Head of Customers at Valerie Health

<div class="break-inside-avoid"><h1 class="sect-head" style="display:inline-flex; align-items:center"><div data-toggle="tooltip" data-placement="bottom" title="" data-original-title="DISC profile is one of the most popular behavioral assessment frameworks in use. It is especially useful in understanding workplace behavior and how different people approach similar situations differently.">DISC Profile : Sibel's Key Traits </div></h1><div class="disc_main personality_container" style="display: flex;align-items: center;justify-content: center;"><figure class="highcharts-figure"> <div class="frrole_circle_label" style="position: absolute;top: calc(50% - 67.5px);left: calc(50% - 66.5px);">ci</div> <div data-toggle="tooltip" data-placement="bottom" title="" data-original-title="Dominance(D) reflects how goal and task oriented a person is and her ability to accomplish results, irrespective of how demanding the circumstances might be. Those scoring high tend to be motivated by winning, competition and success and can be described as direct, demanding and strong willed." style="position: absolute;top: -4%;left: calc(50% - 20px);z-index: 2;cursor: pointer; border-radius: 50%; color:#fff;background: linear-gradient(360deg, #f1828d, #d2527f); height: 30px;width: 30px;font-size: 14px;align-items: center;justify-content: center;display: flex;font-weight: bold;opacity:1">D</div><div class="disclabel1" data-toggle="tooltip" data-placement="bottom" title="" data-original-title="Influence(I) reflects the degree to which a person prefers to work by influencing or persuading others. Those scoring high tend to be people oriented, are motivated by social recognition and building relationships and can be described as warm and enthusiastic in general." style="position: absolute;right: 5%;top: calc(50% - 20px);z-index: 2;cursor: pointer; border-radius: 50%; color:#fff;background: linear-gradient(270deg, #fad859, #f7ca18); height: 30px;width: 30px;font-size: 14px;align-items: center;justify-content: center;display: flex;font-weight: bold;opacity:1">I</div><div data-toggle="tooltip" data-placement="bottom" title="" data-original-title="Steadiness(S) reflects the degree to which a person is likely to focus on cooperation, support and taking everyone along. Those scoring high tend to be consistent and calm, are excited about the opportunity to collaborate and partner and could sometimes be indecisive or overly accommodating." style="position: absolute;bottom: -4%;left: calc(50% - 20px);z-index: 2;cursor: pointer; border-radius: 50%; color:#fff; background: linear-gradient(180deg, #b7f4d8, #66cc99);height: 30px;width: 30px;font-size: 14px;align-items: center;justify-content: center;display: flex;font-weight: bold;opacity:1">S</div><div class="disclabel2" data-toggle="tooltip" data-placement="bottom" title="" data-original-title="Calculativeness(C) reflects the degree to which a person is likely to be cautious, systematic and analytical. Those scoring high tend to emphasise quality and accuracy, enjoy showing off their expertise or challenging assumptions but can sometimes overanalyze things and be overcritical." style="position: absolute;left: 5%;top: calc(50% - 20px);z-index: 2;cursor: pointer; border-radius: 50%; color:#fff; background: linear-gradient(90deg, #848ccf, #524eb7);height: 30px;width: 30px;font-size: 14px;align-items: center;justify-content: center;display: flex;font-weight: bold;opacity:1">C</div><div style="position: absolute;top: calc(50% - 106.5px);left: calc(50% - 106.5px);border-radius:50%;border: 1.5px dotted #c8c6c6;padding:105px"></div><div style="position: absolute;top: calc(50% - 135.5px);left: calc(50% - 135.5px);border-radius:50%;border: 1.5px dotted #c8c6c6;padding:133px"></div> <div id="disc_container"></div> </figure><div class="row traits-row" style="position: relative;width:70%;justify-content:flex-end;margin-right:10px"><div class="personality-cards col-md-10"><div class="personality-head">Calculativeness</div>Calculativeness(C) reflects the degree to which a person is likely to be cautious, systematic and analytical. Those scoring high tend to emphasise quality and accuracy, enjoy showing off their expertise or challenging assumptions but can sometimes overanalyze things and be overcritical.</div><div class="personality-cards col-md-10"><div class="personality-head">Influence</div>Influence(I) reflects the degree to which a person prefers to work by influencing or persuading others. Those scoring high tend to be people oriented, are motivated by social recognition and building relationships and can be described as warm and enthusiastic in general.</div></div></div></div><div class="break-inside-avoid"><h1 class="sect-head" style="display:inline-flex; align-items:center"><div data-toggle="tooltip" data-placement="bottom" title="" data-original-title="OCEAN personality assessment, or Big 5 personality traits model, is the second most well-known behavioral assessment framework after MBTI. It provides a holistic way of understanding how people are and what to expect of them.">OCEAN Profile : Sibel's Key Traits </div></h1><div class="ocean_main personality_container" style="display: flex;align-items: center;justify-content: center;"><figure class="highcharts-figure"> <div class="frrole_circle_label" style="position: absolute;top: calc(50% - 67.5px);left: calc(50% - 66.5px);">ane</div> <div data-toggle="tooltip" data-placement="bottom" title="" data-original-title="Openness(O) reflects the degree of intellectual curiosity, a desire to seek new experiences and a preference for novelty and variety. Those scoring high tend to be inventive, curious and open to trying new things whereas those scoring low tend to be consistent, cautious and more realistic in their approach." style="position: absolute;top: -7%;left: calc(50% - 12px);z-index: 2;cursor: pointer; border-radius: 50%; color:#fff; background: linear-gradient(90deg, #963694, rgb(175,79,173));height: 30px;width: 30px;font-size: 14px;align-items: center;justify-content: center;display: flex;font-weight: bold;opacity:0.72">O</div><div data-toggle="tooltip" data-placement="bottom" title="" data-original-title="Conscientiousness(C) reflects the degree of self-discipline, focus on doing things in a planned manner and acting dutifully. Those scoring high are usually efficient, organized and focused whereas those scoring low tend to be easy-going, spontaneous and unreliable at times." style="position: absolute;right: 4%;top: calc(50% - 70px);z-index: 2;cursor: pointer; border-radius: 50%; color:#fff; background: linear-gradient(180deg, #f15a22, rgb(255,115,59));height: 30px;width: 30px;font-size: 14px;align-items: center;justify-content: center;display: flex;font-weight: bold;opacity:0.72">C</div><div data-toggle="tooltip" data-placement="bottom" title="" data-original-title="Extraversion(E) reflects the degree of assertiveness, sociability that an individual exhibits. People scoring high on extraversion tend to be outgoing, energetic and talkative whereas those scoring tend to be reserved, quiet and thoughtful, especially in social settings." style="position: absolute;bottom: 3%;left: calc(50% - -93px);z-index: 2;cursor: pointer; border-radius: 50%; color:#fff; background: linear-gradient(270deg, #bf55ec, rgb(216,110,255));height: 30px;width: 30px;font-size: 14px;align-items: center;justify-content: center;display: flex;font-weight: bold;opacity:0.72">E</div><div data-toggle="tooltip" data-placement="bottom" title="" data-original-title="Agreeableness(A) reflects the degree of compassion, cooperation and general friendliness in a person. Those scoring high are mostly even-tempered, pleasant and easy to convince whereas those scoring low tend to challenge and question things and are likely to have a contrarian attitude." style="position: absolute;left: 17%;top: calc(50% - -127px);z-index: 2;cursor: pointer; border-radius: 50%; color:#fff; background: linear-gradient(360deg, #be5683, rgb(215,111,156));height: 30px;width: 30px;font-size: 14px;align-items: center;justify-content: center;display: flex;font-weight: bold;opacity:0.72">A</div><div data-toggle="tooltip" data-placement="bottom" title="" data-original-title="Emotional Stability(ES) refers to the degree to which one can experience unpleasant emotions like anger, anxiety etc. easily. Those scoring high tend to be calm, stable and are not perturbed easily whereas those scoring low can be passionate, excitable and have low impulse control, especially under stressful circumstances. (Emotional Stability is same as Neuroticism rated on a reverse scale)" style="position: absolute;left: 5%;top: calc(50% - 70px);z-index: 2;cursor: pointer; border-radius: 50%; color:#fff; background: linear-gradient(360deg, #f62459, rgb(255,61,114));height: 30px;width: 30px;font-size: 14px;align-items: center;justify-content: center;display: flex;font-weight: bold;opacity:0.72">N</div><div style="position: absolute;top: calc(50% - 106.5px);left: calc(50% - 106.5px);border-radius:50%;border: 1.5px dotted #c8c6c6;padding:105px"></div><div style="position: absolute;top: calc(50% - 135.5px);left: calc(50% - 135.5px);border-radius:50%;border: 1.5px dotted #c8c6c6;padding:133px"></div> <div id="ocean_container"></div> </figure><div class="row traits-row" style="position: relative;width:70%;justify-content:flex-end;margin-right:10px"><div class="personality-cards col-md-10"><div class="personality-head">Agreeableness</div>Agreeableness(A) reflects the degree of compassion, cooperation and general friendliness in a person. Those scoring high are mostly even-tempered, pleasant and easy to convince whereas those scoring low tend to challenge and question things and are likely to have a contrarian attitude.</div><div class="personality-cards col-md-10"><div class="personality-head">Emotional Stability</div>Emotional Stability(ES) refers to the degree to which one can experience unpleasant emotions like anger, anxiety etc. easily. Those scoring high tend to be calm, stable and are not perturbed easily whereas those scoring low can be passionate, excitable and have low impulse control, especially under stressful circumstances. (Emotional Stability is same as Neuroticism rated on a reverse scale)</div><div class="personality-cards col-md-10"><div class="personality-head">Extraversion</div>Extraversion(E) reflects the degree of assertiveness, sociability that an individual exhibits. People scoring high on extraversion tend to be outgoing, energetic and talkative whereas those scoring tend to be reserved, quiet and thoughtful, especially in social settings.</div></div></div><hr class="divider-hr" style="margin-bottom:20px"></div>

Sibel Sayiner

Head of Customers at Valerie Health

San Francisco, California, United States

Overview

Personality Overview

Topics They Care About

Media Appearances

Work History

Education

More Information

Social Presence :

Prographics :

Share

Insights For Selling To Sibel

During A Call Or A Meeting

When Cold Calling

Pattern Interrupt: Speaking in a slightly hesitant manner, and seeking their permission at the start through a negation can get you a chance.

Pace: Speak slightly fast, especially if you tend to be calm and confident. Sound like a ‘knows their domain’ person.

Tone: Keep your tone slightly apprehensive, as if you are a little unsure about calling them.

Tactics To Win: Use of negations, giving full information

Mistakes To Avoid: Use of superlatives, overusing social proof

Making The Ask: Use negations, it is extra effective with them. It gives them a chance to say no, they like doing that.

Subconscious Driver: They believe they know a lot, so it needs to make sense as well as make them curious. They need to think that it is something worth investigation.

Greeting: Hi Sibel, this is [user_fname] at [user_companynamefirsttwowords].

Opener: You probably don’t want to be on this cold call, would it be a problem if I asked for 30 seconds of your time?

Introduction: My company has leveraged 30+ years of research to build an AI that can predict anyone's personality, behavior and decision-making style before you even spend a minute with them.

Ask: Companies like [abc], [xyz] have been able to move [KPI1] by X% and [KPI2] by Y%. Would it be too much to put 15 minutes on your calendar to share why this could be high ROI for you?

Close: Can I suggest [time1] on [date1]? Or would you prefer any other slots? And [prospect_email] would be the right email ID for you?

When Writing An Email

Subject: Exciting but objective

Salutation: Yes ( Something usual)

Greeting: No

Emojis/GIFs:

Bullet Points: Could use

Closing Line: Logically summarize, keep high energy

Complimentary Close: Unique or standard

Tone of Words: Confident, informational

Overall Messaging: Focused on generating excitement while staying objective

Length of Mail: Medium

While Negotiating & Closing

The secret to closing fast with Sibel is

Will you ever get a clear answer from Sibel

Insights For Deal Planning

How fast (or slow) will Sibel move?

Can Sibel take some risk or not?

You And Sibel

Personality Compatibility

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