Hanno Muellner, MD
NPI 1548220684 · Internal Medicine Physician · Williamsburg, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Hanno Muellner, MD is a Internal Medicine Physician provider in Williamsburg, MA (NPI 1548220684).
Provider details
- NPI number
- 1548220684
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 155543 (MA)
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
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,320 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 | 448 | $128 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 297 | $92 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 217 | $131 |
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 125 | $129 |
| Administration of Influenza Virus VaccineG0008 | 41 | $33 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 177 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl | 467 | 52 |
| Atorvastatin Calcium | 403 | 126 |
| Levothyroxine Sodium | 393 | 124 |
| Lisinopril | 319 | 94 |
| Gabapentin | 258 | 83 |
| Amlodipine Besylate | 219 | 77 |
| Omeprazole |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-24
- Last updated
- 2011-10-25
Frequently asked questions
- What is Hanno Muellner's NPI number?
- Hanno Muellner's National Provider Identifier (NPI) is 1548220684, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Hanno Muellner's specialty?
- Hanno Muellner is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Hanno Muellner located?
- Hanno Muellner's practice location on file with NPPES is 14 Williams St, Williamsburg, MA 01096-9427.
- What is Hanno Muellner's phone number?
- The practice phone number listed in the NPPES registry for Hanno Muellner is (413) 268-3616.
- Does Hanno Muellner accept Medicare?
- Hanno Muellner is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Hanno Muellner's NPI active?
- Yes — Hanno Muellner's NPI (1548220684) is active in the NPPES registry as of the last update on 2011-10-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.