Carlos Diola, M.D.
NPI 1225022387 · Rheumatology Physician · Midland, MI
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Carlos Diola, M.D. is a Rheumatology Physician provider in Midland, MI (NPI 1225022387).
Provider details
- NPI number
- 1225022387
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 4301077266 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
485 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 207 | $93 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 195 | $63 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 61 | $80 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 22 | $128 |
Typical Medicare-allowed amounts for these services range $63–$128 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote 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 · 40 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Methotrexate Sodiumbrand: Methotrexate | 486 | 170 |
| Prednisone | 480 | 166 |
| Duloxetine Hcl | 247 | 75 |
| Tizanidine Hcl | 192 | 71 |
| Hydroxychloroquine Sulfate | 188 | 66 |
| Etanerceptbrand: Enbrel Sureclick | 182 | 35 |
| Adalimumab |
Practice location
Mailing address
Additional practice locations (2)
- 5694 Midland RdFreeland, MI 48623-8845Phone: (989) 837-9033
- 4851 E Pickard St Ste 2400Mount Pleasant, MI 48858-2042Phone: (989) 837-9033
Registry dates
- Enumerated
- 2005-09-06
- Last updated
- 2025-08-04
- Certified
- 2025-08-04
Frequently asked questions
- What is Carlos Diola's NPI number?
- Carlos Diola's National Provider Identifier (NPI) is 1225022387, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Carlos Diola's specialty?
- Carlos Diola is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Carlos Diola located?
- Carlos Diola's practice location on file with NPPES is 4401 N Campus Ridge Dr, Midland, MI 48640-6112.
- What is Carlos Diola's phone number?
- The practice phone number listed in the NPPES registry for Carlos Diola is (989) 837-9033.
- Does Carlos Diola accept Medicare?
- Carlos Diola is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Carlos Diola's NPI active?
- Yes — Carlos Diola's NPI (1225022387) is active in the NPPES registry as of the last update on 2025-08-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.