Doctor profile · Federal record

Dr. OLUWASEYI AJAYI, M.D.

Internal Medicine Physician (CMS: INTERNAL MEDICINE) · Internal Medicine Physician · Hospitalist Physician · FAIRFAX, VA

  • NPI 1871741108
  • Accepts Medicare
  • 24 yrs in practice
  • Licensed in 2 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
3580 JOSEPH SIEWICK DR STE 306
FAIRFAX, VA 220331764
(703) 391-4520
fax (703) 391-4521
Additional location
7600 Central Ave
Philadelphia, PA 191112442
(215) 728-2000
fax (215) 214-4119
Mailing address
PO BOX 37174
BALTIMORE, MD 212973174

Credentials & registration

NPPES · NUCC
NPI registered
August 2008 — 18 yrs on file
Profile last updated
September 27, 2022
Year of graduation
2002 — 24 yrs since
Specialty taxonomy
207R00000X — NUCC code
State licenses (2)
Virginia #0101261196 · Pennsylvania #MD-440659
Medicaid
PA #102547276

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1871741108. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
756
Distinct HCPCS
5
Medicare allowed
$102,283
HCPCS Description Services Patients Avg allowed
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 461 202 $129
99239 Hospital discharge day management, more than 30 minutes 125 124 $126
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 87 80 $191
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 58 41 $84
99291 Critical care, first 30-74 minutes 25 20 $226

In context: peer comparison

Among 27 peers in this city , average services per provider: 98. This provider delivers 7.7× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
76
Patients
11
Total drug cost
$15,076
Drug Type Claims Patients Total cost
Eliquis (Apixaban) Brand 22 0 $14,706
Metoprolol Succinate Generic 16 0 $143
Amlodipine Besylate Generic 15 0 $62
Furosemide Generic 12 0 $90
Cefuroxime (Cefuroxime Axetil) Brand 11 11 $74

Hospital affiliations

CMS Hospital Compare