Karen Ottenstein, MD
NPI 1083628382 · Family Medicine Physician · Westport, MA
Karen Ottenstein, MD is a Family Medicine Physician provider in Westport, MA (NPI 1083628382).
Provider details
- NPI number
- 1083628382
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 021409 (ME)
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
19 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 2 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Atorvastatin Calcium | 11 |
| Sertraline Hcl | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-29
- Last updated
- 2018-05-30
Frequently asked questions
- What is Karen Ottenstein's NPI number?
- Karen Ottenstein's National Provider Identifier (NPI) is 1083628382, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Ottenstein's specialty?
- Karen Ottenstein is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Ottenstein located?
- Karen Ottenstein's practice location on file with NPPES is 793 Main Rd, Westport, MA 02790.
- What is Karen Ottenstein's phone number?
- The practice phone number listed in the NPPES registry for Karen Ottenstein is (508) 636-7890.
- Is Karen Ottenstein's NPI active?
- Yes — Karen Ottenstein's NPI (1083628382) is active in the NPPES registry as of the last update on 2018-05-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.