Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Warren Lok, MD

Individual provider Student in an Organized Health Care Education/Training Program · NPI 1962658344

Warren Lok, MD is an Internal Medicine in New Haven, Connecticut. Graduated from Boston University School of Medicine in 2004, 22 years ago. Practices with Southern California Permanente Medical Group, an 11,242-clinician group, accepts Medicare assignment and offers telehealth.

Years since qualifying
22
Trained at
Boston University School of Medicine
In the registry since
2008
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

20 York St T-209
New Haven, CT 06510-3220
Phone: (203) 688-2259
Fax: (203) 688-5599
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Student in an Organized Health Care Education/Training Program (primary) Taxonomy 390200000X

Record details

NPI number1962658344
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedAugust 17, 2008
Last updated in NPPESDecember 10, 2021
Certification dateDecember 7, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Also practisesMEDICAL ONCOLOGY
Medical schoolBOSTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 2004 (22 years in practice)
Group practice Southern California Permanente Medical Group — 11242 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 on file with Medicare

Other providers in New Haven