NPI registry status
Active
2026 NPPES data Adolescent Medicine (Internal Medicine) Physician NPI 1558341107 MD
Verify on CMS → William Medd, MD
Adolescent Medicine (Internal Medicine) Physician in Norway, Maine.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 375 in Adolescent Medicine (Internal Medicine) Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
What the federal data shows
William Medd, MD is an Adolescent Medicine (Internal Medicine) Physician in Norway, Maine, listed in the federal CMS National Provider Identifier registry.
- #224
- Adolescent Medicine (Internal Medicine) Physician rank among Maine specialties
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
CMS NPPES provider registry desk
NPI 1558341107 · Adolescent Medicine (Internal Medicine) Physician
NPI-10 · ENUM-LEGACY · TAX-TRACE · RX-NONE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1558341107
- ENUM-LEGACY 2006
- TAX-TRACE 375
- RX-NONE No Part D
- BOOK-THIN 5 in Maine
- PHOTO-ENUM Shahab Ahmad · 2006
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Board-eligible specialty (heuristic, not verified)
William Medd, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about William Medd, MD?
Quality data not reportedPrimary specialty
Adolescent Medicine (Internal Medicine) Physician
Specialty distribution in Maine
How Adolescent Medicine (Internal Medicine) Physician compares to other specialties among Maine providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Adolescent Medicine (Internal Medicine) Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1558341107 |
|---|---|
| Specialty | Adolescent Medicine (Internal Medicine) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 01/19/2006 |
More Adolescent Medicine (Internal Medicine) Physician in ME →
All providers in Maine →
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Adolescent Medicine (Internal Medicine) Physician Overview
How William Medd, MD fits within the Adolescent Medicine (Internal Medicine) Physician landscape nationally.
375
Adolescent Medicine (Internal Medicine) Physician Providers in US
46
States with Adolescent Medicine (Internal Medicine) Physician
3,242
Avg Claims per Provider
Nationwide Adolescent Medicine (Internal Medicine) Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Medd, both outside Maine so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Adolescent Medicine (Internal Medicine) Physician Providers in Maine
Other clinicians with the same primary specialty enrolled in Maine, drawn from the same CMS NPPES roster as Medd.
One of 5 Adolescent Medicine (Internal Medicine) Physician providers enrolled in Maine, 4 are shown here.
Frequently Asked Questions
What is William Medd, MD's specialty? ▼
William Medd, MD specializes in Adolescent Medicine (Internal Medicine) Physician and practices in Norway, Maine. Credentials: MD.
Where is William Medd, MD located? ▼
William Medd, MD is located at 193 MAIN ST, Norway, ME, 04268. Phone: (207) 743-7721.
What is William Medd, MD's NPI number? ▼
William Medd, MD's National Provider Identifier (NPI) is 1558341107, issued on 01/19/2006.
How many Adolescent Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 375 Adolescent Medicine (Internal Medicine) Physician providers across 46 states in the US. The average Adolescent Medicine (Internal Medicine) Physician provider writes 3,242 Medicare Part D claims per year.
Does William Medd, MD accept Medicare? ▼
William Medd, MD appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify William Medd, MD's credentials? ▼
William Medd, MD's NPI is 1558341107 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.