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 .
- 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
- 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
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
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 Fairfax Internal Medicine Physician, average services per provider: 98. This provider delivers 7.7× the peer median.Medicare Part D · 2023
Top prescriptions
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
Frequently asked questions
What is Dr. Oluwaseyi Ajayi's medical specialty?
Dr. Oluwaseyi Ajayi practices Internal Medicine Physician in Fairfax, VA.
Where does Dr. Oluwaseyi Ajayi practice?
Dr. Oluwaseyi Ajayi practices at 3580 Joseph Siewick Dr Ste 306, Fairfax, VA 220331764. Office phone: 7033914520.
What is Dr. Oluwaseyi Ajayi's NPI?
Dr. Oluwaseyi Ajayi's National Provider Identifier (NPI) is 1871741108, issued by NPPES.
Does Dr. Oluwaseyi Ajayi accept Medicare assignment?
Yes. Dr. Oluwaseyi Ajayi accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Oluwaseyi Ajayi commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Hospital discharge day management (HCPCS 99239); Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.