Doctor profile · Federal record

Dr. Madeline Underwood, MD

Family Medicine Physician (CMS: Family Practice) · San Rafael, CA

  • NPI 1427618685
  • Accepts Medicare
  • 7 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1004 Northgate Dr
San Rafael, CA 949032502
(888) 663-6331
fax (415) 252-7176
Mailing address
1 Embarcadero Ctr Ste 1900
San Francisco, CA 941113723

Credentials & registration

NPPES · NUCC
NPI registered
June 2019 — 7 yrs on file
Profile last updated
March 14, 2025
Year of graduation
2019 — 7 yrs since
Specialty taxonomy
207Q00000X — NUCC code
State license (1)
Virginia #0116032868

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1427618685. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$86
Transactions
4
Manufacturers
3
Payer (manufacturer) Industry Txns Amount
Otsuka America Pharmaceutical, INC. 2 $48.85
Lilly USA, LLC 1 $19.09
Novo Nordisk INC 1 $17.87

By nature of payment

Food and Beverage
$86

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
361
Patients
90
Total drug cost
$30,186
Drug Type Claims Patients Total cost
Atorvastatin Calcium Generic 54 25 $1,436
Amlodipine Besylate Generic 41 19 $452
Losartan Potassium Generic 33 12 $562
Cyclobenzaprine Hcl Generic 30 12 $441
Lisinopril Generic 30 11 $227
Fluticasone Propionate Generic 22 11 $303
Albuterol Sulfate Hfa (Albuterol Sulfate) Brand 19 0 $778
Gabapentin Generic 19 0 $211
Omeprazole Generic 19 0 $435
Diclofenac Sodium Generic 18 0 $449

Frequently asked questions

Auto-generated from federal data
What is Dr. Madeline Underwood's medical specialty?
Dr. Madeline Underwood practices Family Medicine Physician in San Rafael, CA.
Where does Dr. Madeline Underwood practice?
Dr. Madeline Underwood practices at 1004 Northgate Dr, San Rafael, CA 949032502. Office phone: 8886636331.
What is Dr. Madeline Underwood's NPI?
Dr. Madeline Underwood's National Provider Identifier (NPI) is 1427618685, issued by NPPES.
Does Dr. Madeline Underwood accept Medicare assignment?
Yes. Dr. Madeline Underwood accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.