Mary Ann Pefanco, M.D.
NPI 1780769703 · Internal Medicine Physician · Hilo, HI
Enrolled with Medicare as Practitioner - Geriatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Ann Pefanco, M.D. is a Internal Medicine Physician provider in Hilo, HI (NPI 1780769703).
Provider details
- NPI number
- 1780769703
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- MD13875 (HI)
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
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,492 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) |
|---|---|---|
| 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 | 587 | $17 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 360 | $103 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 332 | $152 |
| Physician Or Allowed Practitioner Re-Certification for Medicare-Covered Home Health Services Under a Home Health Plan of Care (patient Not Present), Including Contacts With Home Health Agency and Review of Reports of Patient Status Required By Physicians aG0179 | 39 | $47 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 39 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 136 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 573 | 120 |
| Atorvastatin Calcium | 460 | 106 |
| Amlodipine Besylate | 391 | 96 |
| Losartan Potassium | 334 | 78 |
| Gabapentin | 311 | 71 |
| Donepezil Hcl | 233 | 48 |
| Metoprolol Succinate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-26
- Last updated
- 2008-03-20
Frequently asked questions
- What is Mary Ann Pefanco's NPI number?
- Mary Ann Pefanco's National Provider Identifier (NPI) is 1780769703, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Ann Pefanco's specialty?
- Mary Ann Pefanco is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Ann Pefanco located?
- Mary Ann Pefanco's practice location on file with NPPES is 1178b Kinoole St, Hilo, HI 96720-4133.
- What is Mary Ann Pefanco's phone number?
- The practice phone number listed in the NPPES registry for Mary Ann Pefanco is (808) 969-1427.
- Does Mary Ann Pefanco accept Medicare?
- Mary Ann Pefanco is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Ann Pefanco's NPI active?
- Yes — Mary Ann Pefanco's NPI (1780769703) is active in the NPPES registry as of the last update on 2008-03-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.