Barbara Defirmian, MD
NPI 1215150040 · Family Medicine Physician · Fort Defiance, AZ
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Barbara Defirmian, MD is a Family Medicine Physician provider in Fort Defiance, AZ (NPI 1215150040).
Provider details
- NPI number
- 1215150040
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- G71605 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
277 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) |
|---|---|---|
| Residence Visit for Established Patient With High Level of Medical Decision Making, Per Day, If Using Time, at Least 60 Minutes99350 | 127 | $187 |
| Residence Visit for Established Patient With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99349 | 80 | $128 |
| 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 | 70 | $17 |
Typical Medicare-allowed amounts for these services range $17–$187 (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 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 78 | 23 |
| Quetiapine Fumarate | 35 | 16 |
| Omeprazole | 24 | 15 |
| Escitalopram Oxalate | 23 | 13 |
| Furosemide | 23 | — |
| Metformin Hcl | 17 | — |
| Gabapentin | 16 |
Practice location
Mailing address
Additional practice locations (1)
- 84 Santa Rosa StSte aSan Luis Obispo, CA 93405-1812Phone: (805) 591-4727Fax: (805) 439-3394
Registry dates
- Enumerated
- 2007-04-10
- Last updated
- 2025-07-21
- Certified
- 2025-07-08
Frequently asked questions
- What is Barbara Defirmian's NPI number?
- Barbara Defirmian's National Provider Identifier (NPI) is 1215150040, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Barbara Defirmian's specialty?
- Barbara Defirmian is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Barbara Defirmian located?
- Barbara Defirmian's practice location on file with NPPES is Corner of Route N12 and N7, Fort Defiance, AZ 86504.
- What is Barbara Defirmian's phone number?
- The practice phone number listed in the NPPES registry for Barbara Defirmian is (028) 729-8000.
- Does Barbara Defirmian accept Medicare?
- Barbara Defirmian is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Barbara Defirmian's NPI active?
- Yes — Barbara Defirmian's NPI (1215150040) is active in the NPPES registry as of the last update on 2025-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.