Onyemachi Ajah, MD
NPI 1407817398 · Family Medicine Physician · Saint Albans, NY
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Onyemachi Ajah, MD is a Family Medicine Physician provider in Saint Albans, NY (NPI 1407817398).
Provider details
- NPI number
- 1407817398
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 229630 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
386 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 180 | $143 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 107 | $9 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 56 | $102 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 29 | $145 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 14 | $16 |
Typical Medicare-allowed amounts for these services range $9–$145 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 144 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 475 | 101 |
| Metformin Hcl | 347 | 73 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 298 | 74 |
| Simvastatin | 236 | 63 |
| Gabapentin | 235 | 64 |
| Atorvastatin Calcium | 226 | 61 |
| Montelukast Sodium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$276 across 9 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-30
- Last updated
- 2014-03-26
Frequently asked questions
- What is Onyemachi Ajah's NPI number?
- Onyemachi Ajah's National Provider Identifier (NPI) is 1407817398, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Onyemachi Ajah's specialty?
- Onyemachi Ajah is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Onyemachi Ajah located?
- Onyemachi Ajah's practice location on file with NPPES is 111-02 Farmers Blvd, Saint Albans, NY 11412-2328.
- What is Onyemachi Ajah's phone number?
- The practice phone number listed in the NPPES registry for Onyemachi Ajah is (718) 454-1466.
- Does Onyemachi Ajah accept Medicare?
- Onyemachi Ajah is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Onyemachi Ajah's NPI active?
- Yes — Onyemachi Ajah's NPI (1407817398) is active in the NPPES registry as of the last update on 2014-03-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.