Doctor profile · Federal record

Dr. Kathryn Oas, AGNP

Primary Care Nurse Practitioner (CMS: Nurse Practitioner) · Primary Care Nurse Practitioner · Cambridge, MA

  • NPI 1184181380
  • Accepts Medicare
  • 8 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
94 Hampshire St Unit A
Cambridge, MA 021391504
(801) 602-5524

Credentials & registration

NPPES · NUCC
NPI registered
February 2019 — 7 yrs on file
Profile last updated
November 9, 2021
Year of graduation
2018 — 8 yrs since
Specialty taxonomy
363LP2300X — NUCC code
State licenses (2)
Massachusetts #RN2298520 · Massachusetts #AG07180344

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1184181380. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$27
Transactions
1
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
Gilead Sciences, INC. 1 $26.71

By nature of payment

Food and Beverage
$27

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
380
Patients
141
Total drug cost
$39,093
Drug Type Claims Patients Total cost
Atorvastatin Calcium Generic 77 36 $1,641
Lisinopril Generic 37 19 $474
Gabapentin Generic 35 18 $844
Amlodipine Besylate Generic 27 14 $292
Metformin Hcl Generic 24 14 $350
Omeprazole Generic 24 16 $448
Buprenorphine-Naloxone (Buprenorphine Hcl/Naloxone Hcl) Brand 22 0 $3,741
Hydrochlorothiazide Generic 22 12 $131
Metoprolol Succinate Generic 20 12 $528
Januvia (Sitagliptin Phosphate) Brand 19 0 $15,247

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Kathryn Oas's medical specialty?
Dr. Kathryn Oas practices Primary Care Nurse Practitioner in Cambridge, MA.
Where does Dr. Kathryn Oas practice?
Dr. Kathryn Oas practices at 94 Hampshire St Unit A, Cambridge, MA 021391504. Office phone: 8016025524.
What is Dr. Kathryn Oas's NPI?
Dr. Kathryn Oas's National Provider Identifier (NPI) is 1184181380, issued by NPPES.
Does Dr. Kathryn Oas accept Medicare assignment?
Yes. Dr. Kathryn Oas accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.