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JONATHAN TAM MD INC
NPI 1265766166
Obstetrics & Gynecology in Pasadena, CA

Active since September 24, 2009
105 N HILL AVE STE 203, PASADENA, CA 91106(626) 449-3263(626) 795-5145 Get Directions Write a Review

NPPES record last updated: September 24, 2013. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Jonathan Tam Md Inc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JONATHAN TAM MD INC (NPI 1265766166) is a healthcare organization registered as an obstetrics & gynecology in Pasadena, California and active in the NPI registry since September 2009. The organization lists Patricia Lam, Om, as its authorized official.

NPPES Registry Identity

NPI1265766166
Entity TypeOrganization
Primary Taxonomy207V00000X
Legal Business NameJONATHAN TAM MD INC
Location Address105 N HILL AVE STE 203Pasadena, CA 91106-1934
Mailing Address105 N Hill Ave #203Pasadena, CA 91106-3487 · (626) 449-3263 · Fax (626) 795-5145
Phone(626) 449-3263
Fax(626) 795-5145
Organization SubpartNo
Authorized OfficialPatricia LamOm · (626) 449-3263
Enumeration DateSeptember 24, 2009
Last NPPES UpdateSeptember 24, 2013
✔ NPI 1265766166 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in CA · G66009
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
105 N HILL AVE STE 203, Pasadena, CA 91106
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Other Identifiers 3

Medicaid00G660094CA
Medicaid00G660091CA
Medicare UPINF01868CA

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Jonathan Tam Md Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Jonathan Tam MD Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Jonathan Tam, M.D.
Obstetrics/Gynecology
NPI 1013942952
105 N HILL AVE STE 203
Pasadena, CA 91106
(626) 449-2800
✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Jonathan Tam MD Inc's NPI number?

The NPI number for Jonathan Tam MD Inc is 1265766166. It was assigned to this organization in the NPPES registry on September 24, 2009.

Where is Jonathan Tam MD Inc located?

Jonathan Tam MD Inc is located at 105 N Hill Ave Ste 203, Pasadena, CA 91106. The listed phone number is (626) 449-3263.

What is Jonathan Tam MD Inc's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Jonathan Tam MD Inc enrolled in Medicare?

Yes. Jonathan Tam MD Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Jonathan Tam MD Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Obstetrics/Gynecology) reassigns their Medicare billing to Jonathan Tam MD Inc. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Jonathan Tam MD Inc was last updated on September 24, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.