Doctor profile · Federal record

Dr. Stephen Nimelstein, MD

Internal Medicine Physician · Rheumatology Physician · San Francisco, CA

  • NPI 1326086661
  • 20 yrs on file
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
400 Parnassus Ave
San Francisco, CA 941432202
(415) 353-2357
fax (415) 353-2669
Mailing address
1635 Divisadero Street, Suite 625, Box 1821
San Francisco, CA 941430001

Credentials & registration

NPPES · NUCC
NPI registered
June 2006 — 20 yrs on file
Profile last updated
June 12, 2008
Specialty taxonomy
207R00000X — NUCC code
State license (1)
California #G27128
Medicaid
CA #00G271280

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1326086661. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$150
Transactions
1
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
Amgen Inc. 1 $149.96

By nature of payment

Food and Beverage
$150

Frequently asked questions

Auto-generated from federal data
What is Dr. Stephen Nimelstein's medical specialty?
Dr. Stephen Nimelstein practices Internal Medicine Physician in San Francisco, CA.
Where does Dr. Stephen Nimelstein practice?
Dr. Stephen Nimelstein practices at 400 Parnassus Ave, San Francisco, CA 941432202. Office phone: 4153532357.
What is Dr. Stephen Nimelstein's NPI?
Dr. Stephen Nimelstein's National Provider Identifier (NPI) is 1326086661, issued by NPPES.