DR. JONATHAN NEI-KIM TAM (M.D.) – Obstetrics & Gynecology Physician, NPI 1013942952
Obstetrics & Gynecology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
4,008 OBSTETRICS/GYNECOLOGY in CA
Provider Addresses for DR. JONATHAN NEI-KIM TAM (M.D.)
105 N HILL AVE STE 203
PASADENA, CA 911061934
Phone: (626) 449-2800
Fax: (626) 795-5145
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 22 Open Payments records for all available years, with a total value of $643.
Total Amount is formed as General ($643) + Research ($0) + Ownership ($0) = $643.
Last reported payment date: 2024-06-26 • Largest payer in this snapshot: ABBVIE INC. ($375).
Total Amount
$643
General + Research + Ownership
Payments
22
Total payment records
General Amount
$643
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-06-26
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $375 |
| Novartis Pharmaceuticals Corporation | $145 |
| Sumitomo Pharma America, Inc. | $50 |
| Exeltis, USA Inc. | $36 |
| Merz North America, Inc. | $36 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2010-07-28
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20100728001087 | I | Obstetrics/Gynecology | CA | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 91106)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| OBSTETRICS/GYNECOLOGY | CA | 82270 | Stool analysis for blood to screen for colon tumors | 12 | 12 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | TN | |
| O B S T E T R I C S/ G Y N E C O L O G Y | CA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | WI | |
| O B S T E T R I C S/ G Y N E C O L O G Y | CA | |
| - | MD | |
| O B S T E T R I C S/ G Y N E C O L O G Y | OH | |
| O B S T E T R I C S/ G Y N E C O L O G Y | CA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | IL | |
| - | CA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | TX |
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