Doctor profile · Federal record

Dr. Michael Sim, NP

Family Nurse Practitioner (CMS: Nurse Practitioner) · Pasadena, CA

  • NPI 1619743887
  • Accepts Medicare
  • 3 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
100 W California Blvd
Pasadena, CA 911053010
(626) 397-3959

Credentials & registration

NPPES · NUCC
NPI registered
November 2023 — 3 yrs on file
Year of graduation
2023 — 3 yrs since
Specialty taxonomy
363LF0000X — NUCC code
State license (1)
California #95027920

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1619743887. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$530
Transactions
19
Manufacturers
8
Payer (manufacturer) Industry Txns Amount
Janssen Biotech, INC. 8 $257.59
Takeda Pharmaceuticals U.S.A., INC. 4 $94.13
Qol Medical, LLC 2 $57.15
Ipsen Biopharmaceuticals, INC 1 $32.02
Phathom Pharmaceuticals, INC. 1 $25.03
Merck Sharp & Dohme LLC 1 $24.47
Alnylam Pharmaceuticals INC. 1 $21.68
Salix Pharmaceuticals, A Division of Bausch Health US, LLC 1 $17.53

By nature of payment

Food and Beverage
$446
Education
$84

Frequently asked questions

Auto-generated from federal data
What is Dr. Michael Sim's medical specialty?
Dr. Michael Sim practices Family Nurse Practitioner in Pasadena, CA.
Where does Dr. Michael Sim practice?
Dr. Michael Sim practices at 100 W California Blvd, Pasadena, CA 911053010. Office phone: 6263973959.
What is Dr. Michael Sim's NPI?
Dr. Michael Sim's National Provider Identifier (NPI) is 1619743887, issued by NPPES.
Does Dr. Michael Sim accept Medicare assignment?
Yes. Dr. Michael Sim accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.