DR. LEE-MAY CHEN (MD) – Gynecologic Oncology Physician, NPI 1902861883
Gynecologic Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
4,008 OBSTETRICS/GYNECOLOGY in CA
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Provider Addresses for DR. LEE-MAY CHEN (MD)
1635, Divisadero Street, Western Addition, San Francisco, California, 94115, United States
STE 625, BOX 1821
SAN FRANCISCO, CA 941430001
Phone: (415) 476-4029
Fax: (415) 476-4150
Type: Mailing
UCSF Mount Zion Campus, 1600, Divisadero Street, Western Addition, San Francisco, California, 94115, United States
SAN FRANCISCO, CA 941430001
Phone: (415) 353-9600
Fax: (415) 353-7657
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 9 Open Payments records for all available years, with a total value of $525.
Total Amount is formed as General ($525) + Research ($0) + Ownership ($0) = $525.
Last reported payment date: 2024-09-09 • Largest payer in this snapshot: GlaxoSmithKline, LLC. ($359).
Total Amount
$525
General + Research + Ownership
Payments
9
Total payment records
General Amount
$525
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-09-09
Latest reported date
Top Companies
Largest payers in this snapshot
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: 2008-02-29
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 |
|---|---|---|---|---|
| I20080229000579 | 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.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 90 | 53 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 71 | 64 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 56 | 18 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 44 | 24 | $0 |
| 99205 | New patient office or other outpatient visit, 60-74 minutes | 21 | 21 | $0 |
Insurance plans in this area (ZIP 94143)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| O P H T H A L M O L O G Y | CA | |
| - | CA | |
| - | CA | |
| Physician Assistant | CA | |
| - | ID | |
| Orthopedic Surgery | CA | |
| - | CA | |
| Internal Medicine, Cardiovascular Disease (Cardiology) | MA | |
| O P H T H A L M 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 | CA |
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