Matthew Herrmann, M.D.
NPI 1508251091 · Rheumatology Physician · Phoenix, AZ
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Herrmann, M.D. is a Rheumatology Physician provider in Phoenix, AZ (NPI 1508251091).
Provider details
- NPI number
- 1508251091
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
11 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
7,611 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 | 919 | $123 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 758 | $9 |
| Administration of Non-Hormonal Anti-Neoplastic Chemotherapy Under Skin Or Into Muscle96401 | 713 | $69 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 693 | $16 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 670 | $10 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydroxychloroquine Sulfate | 394 | 149 |
| Methotrexate Sodiumbrand: Methotrexate | 314 | 124 |
| Prednisone | 297 | 143 |
| Gabapentin | 54 | 23 |
| Tramadol Hcl | 51 | 21 |
| Pregabalin | 48 | 17 |
| Folic Acid | 45 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,630 across 138 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
- 2015-04-01
- Last updated
- 2024-06-06
- Certified
- 2024-06-06
Frequently asked questions
- What is Matthew Herrmann's NPI number?
- Matthew Herrmann's National Provider Identifier (NPI) is 1508251091, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Herrmann's specialty?
- Matthew Herrmann is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Herrmann located?
- Matthew Herrmann's practice location on file with NPPES is 4550 E Bell Rd Ste 170, Phoenix, AZ 85032-9385.
- What is Matthew Herrmann's phone number?
- The practice phone number listed in the NPPES registry for Matthew Herrmann is (480) 443-8400.
- Does Matthew Herrmann accept Medicare?
- Matthew Herrmann is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Herrmann's NPI active?
- Yes — Matthew Herrmann's NPI (1508251091) is active in the NPPES registry as of the last update on 2024-06-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.