Doctor profile · Federal record

Dr. Maria Diosdado, NP

Family Nurse Practitioner (CMS: Nurse Practitioner) · Registered Nurse · Nurse Practitioner · Registered Nurse · Fullerton, CA

  • NPI 1700628385
  • Accepts Medicare
  • 3 yrs in practice
  • Licensed in 2 states
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
2151 N Harbor Blvd Ste 3200
Fullerton, CA 928353826
(714) 446-5900
Mailing address
385 S Manchester Ave Unit 1079
Orange, CA 928683240

Credentials & registration

NPPES · NUCC
NPI registered
June 2024 — 2 yrs on file
Profile last updated
July 29, 2024
Year of graduation
2023 — 3 yrs since
Specialty taxonomy
363LF0000X — NUCC code
State licenses (3)
California #95030067 · Texas #1151509 · California #95187676

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1700628385. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$1,085
Transactions
36
Manufacturers
15
Payer (manufacturer) Industry Txns Amount
Genentech USA, Inc. 3 $191.10
Eisai Inc. 9 $153.80
Pharmacosmos Therapeutics Inc. 1 $150.00
Merck Sharp & Dohme LLC 5 $114.15
ABBVIE INC. 3 $69.86
AstraZeneca Pharmaceuticals LP 3 $56.79
Lilly USA, LLC 2 $55.65
Daiichi Sankyo Inc. 2 $45.79
Boehringer Ingelheim Pharmaceuticals, Inc. 1 $35.23
Astellas Pharma US Inc 1 $34.84
E.R. Squibb & Sons, L.L.C. 2 $32.26
Karyopharm Therapeutics Inc. 1 $28.66
Rigel Pharmaceuticals, Inc. 1 $23.65
Incyte Corporation 1 $23.21
Novartis Pharmaceuticals Corporation 1 $21.32

By nature of payment

Food and Beverage
$1,085

Frequently asked questions

Auto-generated from federal data
What is Dr. Maria Diosdado's medical specialty?
Dr. Maria Diosdado practices Family Nurse Practitioner in Fullerton, CA.
Where does Dr. Maria Diosdado practice?
Dr. Maria Diosdado practices at 2151 N Harbor Blvd Ste 3200, Fullerton, CA 928353826. Office phone: 7144465900.
What is Dr. Maria Diosdado's NPI?
Dr. Maria Diosdado's National Provider Identifier (NPI) is 1700628385, issued by NPPES.
Does Dr. Maria Diosdado accept Medicare assignment?
Yes. Dr. Maria Diosdado accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.