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

John J. Lah, MD

Individual provider Gastroenterology Physician · NPI 1437221272

John J. Lah, MD is a Gastroenterology in Whittier, California. Graduated from New York Medical College in 2000, 26 years ago. Practices with United Medical Doctors, a 169-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
26
Trained at
New York Medical College
Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

15141 Whittier Blvd Ste #260
Whittier, CA 90603-2135
Phone: (562) 698-0306
Fax: (562) 693-7016
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence A76371 (CA)

Record details

NPI number1437221272
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 15, 2006
Last updated in NPPESOctober 14, 2008
Mailing address15141 Whittier Blvd, Suite #260, Whittier, CA 90603-2135

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolNEW YORK MEDICAL COLLEGE
Graduated 2000 (26 years in practice)
Group practice United Medical Doctors — 169 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Whittier