Doctor profile · Federal record

Dr. Andrea Mendelssohn, MD, FACOG, Fabihm

Obstetrics & Gynecology Physician · Gynecology Physician · Lafayette, CA

  • NPI 1144275264
  • 20 yrs on file
  • Female
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
970 Dewing Ave Ste 203
Lafayette, CA 945494260
(925) 299-9001
fax (925) 299-9018
Additional location
19845 Lake Chabot RD, Suite 200
Castro Valley, CA 945464055
(510) 581-0800
fax (510) 581-0808
Mailing address
Po Box 6606
Albany, CA 947060606

Credentials & registration

NPPES · NUCC
NPI registered
May 2006 — 20 yrs on file
Profile last updated
July 21, 2022
Specialty taxonomy
207V00000X — NUCC code
State license (1)
California #A75537
Medicaid
CA #00A755370

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1144275264. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
39
Distinct HCPCS
1
Medicare allowed
$2,671
HCPCS Description Services Patients Avg allowed
99213 Established patient office or other outpatient visit, 20-29 minutes 39 34 $68

In context: peer comparison

Among 1 peers in Lafayette Obstetrics & Gynecology Physician, average services per provider: 39. This provider delivers 1.0× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
86
Patients
29
Total drug cost
$12,628
Drug Type Claims Patients Total cost
Estradiol Generic 70 29 $12,172
Clobetasol Propionate Generic 16 0 $456

Frequently asked questions

Auto-generated from federal data
What is Dr. Andrea Mendelssohn's medical specialty?
Dr. Andrea Mendelssohn practices Obstetrics & Gynecology Physician in Lafayette, CA.
Where does Dr. Andrea Mendelssohn practice?
Dr. Andrea Mendelssohn practices at 970 Dewing Ave Ste 203, Lafayette, CA 945494260. Office phone: 9252999001.
What is Dr. Andrea Mendelssohn's NPI?
Dr. Andrea Mendelssohn's National Provider Identifier (NPI) is 1144275264, issued by NPPES.
What procedures does Dr. Andrea Mendelssohn commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.