Peter Siersma, MD
NPI 1730148149 · Internal Medicine Physician · Williamsburg, MA
Peter Siersma, MD is a Internal Medicine Physician provider in Williamsburg, MA (NPI 1730148149).
Provider details
- NPI number
- 1730148149
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 79023 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-23
- Last updated
- 2008-10-07
Frequently asked questions
- What is Peter Siersma's NPI number?
- Peter Siersma's National Provider Identifier (NPI) is 1730148149, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Peter Siersma's specialty?
- Peter Siersma is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Peter Siersma located?
- Peter Siersma's practice location on file with NPPES is 14 Williams St, Williamsburg, MA 01096-9427.
- What is Peter Siersma's phone number?
- The practice phone number listed in the NPPES registry for Peter Siersma is (413) 268-3616.
- Is Peter Siersma's NPI active?
- Yes — Peter Siersma's NPI (1730148149) is active in the NPPES registry as of the last update on 2008-10-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.