DR. ANDREA MENDELSSOHN (MD, FACOG, FABIHM) – Obstetrics & Gynecology Physician, NPI 1144275264
Obstetrics & Gynecology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
4,007 OBSTETRICS/GYNECOLOGY in CA
Provider Addresses for DR. ANDREA MENDELSSOHN (MD, FACOG, FABIHM)
970 DEWING AVE STE 203
LAFAYETTE, CA 945494260
Phone: (925) 299-9001
Fax: (925) 299-9018
Type: Location
19845 Lake Chabot Rd
Suite 200
Castro Valley, CA 945464055
Phone: (510) 581-0800
Fax: (510) 581-0808
Type: Location
Albany Post Office, West Broad Avenue, Hollywood, Albany, Dougherty County, Georgia, 31701, United States
ALBANY, CA 947060606
Phone: (510) 529-6659
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
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: 2025-03-10
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20041021000399 | I | Obstetrics/Gynecology | CA | TBD |
| I20250310000809 | I | Obstetrics/Gynecology | VT | 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 |
|---|---|---|---|---|
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 39 | 34 | $0 |
Insurance plans in this area (ZIP 94549)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Emergency Medicine | VT | |
| - | VT | |
| Physician Assistant | VT | |
| General Surgery | VA | |
| Physician Assistant | VT | |
| Hospitalist, Internal Medicine | CO | |
| H O S P I T A L I S T | FL | |
| Diagnostic Radiology | IL | |
| Family Practice | VT | |
| Nurse Practitioner | VT |
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