Your care team

Care from the best in medicine.

Meet the U.S.-licensed, board-certified clinicians prescribing on the OPTML platform.

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Dr. Takashi Nakamura, MD, FACEP

Chief Medical Officer

Emergency Medicine Digital Health

Dr. Takashi Nakamura, MD

Board-certified emergency medicine physician with 11+ years of clinical practice. Digital health executive overseeing medical operations and prescribing protocols.

Dr. Laurie J. Mercier, MD

Medical Director

Family Medicine Primary Care

Dr. Laurie J. Mercier, MD

Board-certified family physician with 30+ years of clinical experience. Leads patient-centered clinical strategy and primary care operations.

Dr. Stephen MacDade, MD

Emergency Medicine Physician

Telehealth Men’s Health

Dr. Stephen MacDade, MD

Board-certified emergency medicine physician with 10+ years of clinical experience. Telehealth, acute care, and men’s health.

Dr. Scott Sanderson, MD

Emergency Medicine Physician

Military Medicine Aesthetic & Regenerative Care

Dr. Scott Sanderson, MD

Board-certified emergency medicine physician with a background in military medicine. Aesthetic and regenerative care.

Kimberli Hastings, MSN, RN, NP

Family Nurse Practitioner

Family Medicine Mental Health

Kimberli Hastings, MSN, RN, NP

Family Nurse Practitioner specializing in family medicine and mental health. Clinical experience since 2019.

Provider licensure

Licensed in every state we serve.

Our prescribing network is made up of U.S. licensed clinicians. Massachusetts, Rhode Island and Vermont require telemedicine providers to publish license numbers, so those are shown. Select a state to see who is licensed there.

51 states and territories · 240 licenses · Current as of June 11, 2026

Massachusetts4
  • Kimberli HastingNPRN2379884
  • Theresa VergaraMDRN2381153
  • Laurie MercierMD10233001
  • Daniel FunschMD1017082
Rhode Island3
  • Kimberli HastingNP3470
  • Theresa VergaraMDAPRN03619
  • Edilberto AtienzaMDMD17115
Vermont3
  • Kimberli HastingNP101.0135472
  • Laurie MercierMD42.0017422
  • Theresa VergaraMD101.0136313
Alabama3
  • Brittain KulowMD
  • Daniel FunschMD
  • Laurie MercierMD
Alaska5
  • Theresa VergaraMD
  • Jerry CattelaneDO
  • Laurie MercierMD
  • Laurenmarie Cormier
  • Dina WhiteakerNP
Arizona7
  • Kimberli HastingNP
  • Theresa VergaraMD
  • Ogadinma ObieMD
  • David WeberMD
  • Muhammad UsmanMD
  • Edilberto AtienzaMD
  • Garauv PatelMD
Arkansas5
  • Kimberli HastingNP
  • Daniel FunschMD
  • Laurie MercierMD
  • Dina WhiteakerNP
  • Frank SuppaDO
California6
  • May-Lynn ChuMD
  • Kimberli HastingNP
  • Theresa VergaraMD
  • Ogadinma ObieMD
  • Muhammad UsmanMD
  • Timothy MeyersMD
Colorado6
  • Stephen MacdadeMD
  • May-Lynn ChuMD
  • Jerry CattelaneDO
  • Muhammad UsmanMD
  • Garauv PatelMD
  • Timothy MeyersMD
Connecticut3
  • Theresa VergaraMD
  • Jerry CattelaneDO
  • Daniel FunschMD
Delaware4
  • Craig WalkerNP
  • Jerry CattelaneDO
  • Kimberli HastingNP
  • Laurie MercierMD
District of Columbia7
  • Kimberli HastingNP
  • Theresa VergaraMD
  • Jerry CattelaneDO
  • Dawn AdamsMD
  • Dina WhiteakerNP
  • Daniel FunschMD
  • Kristine ClementsNP
Florida8
  • Stephen MacdadeMD
  • May-Lynn ChuMD
  • Kimberli HastingNP
  • Theresa VergaraMD
  • Yuhang JiaMD
  • Jerry CattelaneDO
  • Garauv PatelMD
  • Timothy MeyersMD
Georgia4
  • Stephen MacdadeMD
  • May-Lynn ChuMD
  • Kimberli HastingNP
  • Muhammad UsmanMD
Hawaii4
  • Theresa VergaraMD
  • Frank SuppaMD
  • Laurie MercierMD
  • Dina WhiteakerNP
Idaho4
  • Jerry CattelaneDO
  • Muhammad UsmanMD
  • Dina WhiteakerNP
  • Daniel FunschMD
Illinois8
  • May-Lynn ChuMD
  • Kimberli HastingNP
  • Theresa VergaraMD
  • Ogadinma ObieMD
  • Jerry CattelaneDO
  • Muhammad UsmanMD
  • Garauv PatelMD
  • Timothy MeyersMD
Indiana5
  • Kimberli HastingNP
  • Theresa VergaraMD
  • Stephen MacdadeMD
  • Yuhang JiaMD
  • Timothy MeyersMD
Iowa4
  • May-Lynn ChuMD
  • Kimberli HastingNP
  • Theresa VergaraMD
  • Daniel FunschMD
Kansas5
  • Kimberli HastingNP
  • Stephen MacdadeMD
  • May-Lynn ChuMD
  • Jerry CattelaneDO
  • Muhammad UsmanMD
Kentucky4
  • May-Lynn ChuMD
  • Kimberli HastingNP
  • Brittain KulowMD
  • Emmanuel OkeMD
Louisiana4
  • Kimberli HastingNP
  • May-Lynn ChuMD
  • Laurie MercierMD
  • Timothy MeyersMD
Maine4
  • Kimberli HastingNP
  • Theresa VergaraMD
  • Daniel FunschMD
  • Jerry CattelaneDO
Maryland4
  • May-Lynn ChuMD
  • Kimberli HastingNP
  • Daniel FunschMD
  • Edilberto AtienzaMD
Michigan7
  • Stephen MacdadeMD
  • May-Lynn ChuMD
  • Theresa VergaraMD
  • Ogadinma ObieMD
  • Yuhang JiaMD
  • Jerry CattelaneDO
  • Muhammad UsmanMD
Minnesota3
  • Kimberli HastingNP
  • Dina WhiteakerNP
  • Jerry CattelaneDO
Mississippi3
  • Kimberli HastingNP
  • Theresa VergaraMD
  • Laurie MercierMD
Missouri4
  • May Lynn ChuMD
  • Kimberli HastingNP
  • Laurie MercierMD
  • Dina WhiteakerNP
Montana6
  • Stephen MacdadeMD
  • May-Lynn ChuMD
  • Kimberli HastingNP
  • Theresa VergaraMD
  • Ogadinma ObieMD
  • Jerry CattelaneDO
Nebraska4
  • May-Lynn ChuMD
  • Kimberli HastingNP
  • Theresa VergaraMD
  • Jerry CattelaneDO
Nevada3
  • Daniel FunschMD
  • Kimberli HastingNP
  • Theresa VergaraMD
New Hampshire4
  • Stephen MacdadeMD
  • Ogadinma ObieMD
  • Jerry CattelaneDO
  • David WeberMD
New Jersey4
  • May-Lynn ChuMD
  • Kimberli HastingNP
  • Garauv PatelMD
  • Timothy MeyersMD
New Mexico3
  • Kimberli HastingNP
  • Theresa VergaraMD
  • Jerry CattelaneDO
New York8
  • Stephen MacdadeMD
  • May-Lynn ChuMD
  • Kimberli HastingNP
  • Theresa VergaraMD
  • Andrea MontanaMD
  • Jerry CattelaneDO
  • David WeberMD
  • Timothy MeyersMD
North Carolina3
  • Daniel FunschMD
  • Timothy MeyersMD
  • Kimberli HastingNP
North Dakota4
  • Kimberli HastingNP
  • Theresa VergaraMD
  • Jerry CattelaneDO
  • Muhammad UsmanMD
Ohio6
  • Stephen MacdadeMD
  • May-Lynn ChuMD
  • Theresa VergaraMD
  • Ogadinma ObieMD
  • Jerry CattelaneDO
  • Muhammad UsmanMD
Oklahoma3
  • Kristine ClementsNP
  • Kimberli HastingNP
  • Daniel FunschNP
Oregon4
  • Laurie MercierMD
  • Kimberli HastingNP
  • Kristine ClementsNP
  • Dina WhiteakerNP
Pennsylvania6
  • May-Lynn ChuMD
  • Theresa VergaraMD
  • Yuhang JiaMD
  • Jerry CattelaneDO
  • Muhammad UsmanMD
  • Timothy MeyersMD
South Carolina7
  • Stephen MacdadeMD
  • May-Lynn ChuMD
  • Kimberli HastingNP
  • Theresa VergaraMD
  • Jerry CattelaneDO
  • Garauv PatelMD
  • Timothy MeyersMD
South Dakota3
  • Kimberli HastingNP
  • Theresa VergaraMD
  • Laurie MercierMD
Tennessee8
  • Stephen MacdadeMD
  • May-Lynn ChuMD
  • Kimberli HastingNP
  • Jerry CattelaneDO
  • David WeberMD
  • Muhammad UsmanMD
  • Garauv PatelMD
  • Timothy MeyersMD
Texas7
  • Anesia DelphineNP
  • Kimberli HastingNP
  • Yuhang JiaMD
  • Jerry CattelaneDO
  • David WeberMD
  • Muhammad UsmanMD
  • Dawn AdamsMD
Utah6
  • Frank SuppaMD
  • May-Lynn ChuMD
  • Russell VanMaeleMD
  • Andrew SaklaMD
  • Yuhang JiaMD
  • Jerry CattelaneDO
Virginia6
  • Stephen MacdadeMD
  • May-Lynn ChuMD
  • Kimberli HastingNP
  • Jerry CattelaneDO
  • David WeberMD
  • Edilberto AtienzaMD
Washington3
  • Hridayesh NatMD
  • Kimberli HastingNP
  • Jerry CattelaneDO
West Virginia3
  • Hridayesh NatMD
  • Knox BeasleyMD
  • Laurie MercierMD
Wisconsin5
  • May-Lynn ChuMD
  • Kimberli HastingNP
  • Theresa VergaraMD
  • Yuhang JiaMD
  • Jerry CattelaneDO
Wyoming3
  • Kimberli HastingNP
  • Theresa VergaraMD
  • Laurie MercierMD

License numbers are published where state telemedicine rules require public disclosure. Verification of any clinician is available on request through the relevant state board.

Prescribing services on the OPTML platform are provided through a U.S. physician-led telehealth network (our U.S.-licensed physician network). The complete state-by-state licensure roster is published above. Licensure information is provided by our prescribing partner and is current as of the date displayed; we update this roster on at least a quarterly basis or sooner if a license status changes.

How every claim on this site is reviewed: our medical review process.

Weight-loss medication disclaimer

OPTML offers compounded semaglutide and tirzepatide, prescribed and overseen by U.S.-licensed physicians. Compounded drug products are not approved or evaluated for safety, effectiveness, or quality by the FDA. OPTML is not associated with, endorsed by, or affiliated with the manufacturers of FDA-approved branded weight-loss medications, and does not sell or supply those branded products. Anyone interested in an FDA-approved branded medication should consult a licensed healthcare provider or pharmacist. Individual results vary; no specific result is promised, and weight management requires ongoing medical guidance.

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