Robert Millstein, MD
NPI 1003094590 · Internal Medicine Physician · Portsmouth, NH
Robert Millstein, MD is a Internal Medicine Physician provider in Portsmouth, NH (NPI 1003094590).
Provider details
- NPI number
- 1003094590
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 8012 (NH)
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
18 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
- 2008-02-06
- Last updated
- 2008-02-06
Frequently asked questions
- What is Robert Millstein's NPI number?
- Robert Millstein's National Provider Identifier (NPI) is 1003094590, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Millstein's specialty?
- Robert Millstein is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Millstein located?
- Robert Millstein's practice location on file with NPPES is 100 Campus Dr, Portsmouth, NH 03801-5892.
- What is Robert Millstein's phone number?
- The practice phone number listed in the NPPES registry for Robert Millstein is (603) 422-8208.
- Is Robert Millstein's NPI active?
- Yes — Robert Millstein's NPI (1003094590) is active in the NPPES registry as of the last update on 2008-02-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.