Nancy Haff, MD
NPI 1922411867 · Internal Medicine Physician · Wellesley, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nancy Haff, MD is a Internal Medicine Physician provider in Wellesley, MA (NPI 1922411867).
Provider details
- NPI number
- 1922411867
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 269993 (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
12 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
268 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 68 | $9 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 61 | $141 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 58 | $196 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 37 | $140 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 30 | $100 |
| Administration of Influenza Virus VaccineG0008 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 37 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 123 | 31 |
| Omeprazole | 87 | 27 |
| Amlodipine Besylate | 63 | 21 |
| Levothyroxine Sodium | 62 | 17 |
| Irbesartan | 45 | 14 |
| Metoprolol Succinate | 43 | 13 |
| Lisinopril | 41 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-06-09
- Last updated
- 2026-01-09
- Certified
- 2026-01-09
Frequently asked questions
- What is Nancy Haff's NPI number?
- Nancy Haff's National Provider Identifier (NPI) is 1922411867, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nancy Haff's specialty?
- Nancy Haff is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nancy Haff located?
- Nancy Haff's practice location on file with NPPES is 70 Hastings St Ste 200, Wellesley, MA 02481-5439.
- What is Nancy Haff's phone number?
- The practice phone number listed in the NPPES registry for Nancy Haff is (781) 772-8600.
- Does Nancy Haff accept Medicare?
- Nancy Haff is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nancy Haff's NPI active?
- Yes — Nancy Haff's NPI (1922411867) is active in the NPPES registry as of the last update on 2026-01-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.