Riad Hajjar, M.D.
NPI 1538153176 · Internal Medicine Physician · Port Huron, MI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Riad Hajjar, M.D. is a Internal Medicine Physician provider in Port Huron, MI (NPI 1538153176).
Provider details
- NPI number
- 1538153176
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- RH066725 (MI)
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
4,058 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 | 896 | $127 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 597 | $7 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 459 | $79 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 207 | $120 |
| Hemoglobin A1c Level83036 | 191 | $10 |
| Annual Alcohol Misuse Screening, 5 to 15 MinutesG0442 | 171 | $19 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 219 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 1,112 | 236 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 906 | 118 |
| Alprazolam | 673 | 109 |
| Atorvastatin Calcium | 611 | 161 |
| Pantoprazole Sodium | 524 | 123 |
| Metoprolol Tartrate | 511 | 122 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$780 across 32 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
- 2005-09-09
- Last updated
- 2007-07-08
Frequently asked questions
- What is Riad Hajjar's NPI number?
- Riad Hajjar's National Provider Identifier (NPI) is 1538153176, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Riad Hajjar's specialty?
- Riad Hajjar is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Riad Hajjar located?
- Riad Hajjar's practice location on file with NPPES is 1201 Stone St, Port Huron, MI 48060-3563.
- What is Riad Hajjar's phone number?
- The practice phone number listed in the NPPES registry for Riad Hajjar is (810) 966-9556.
- Does Riad Hajjar accept Medicare?
- Riad Hajjar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Riad Hajjar's NPI active?
- Yes — Riad Hajjar's NPI (1538153176) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.