1. Home
  2. Directory
  3. Massachusetts
  4. Wellesley
  5. Internal Medicine
  6. NPI Profile

NANCY C HAFF MD
NPI 1922411867
Internal Medicine in Wellesley, MA

Active since June 09, 2014PECOS Enrolled
70 HASTINGS ST STE 200, WELLESLEY, MA 02481(781) 772-8600(781) 772-5600 Get Directions Write a Review

NPPES record last updated: January 9, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Nancy C Haff Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

NANCY C HAFF MD (NPI 1922411867) is an individual internal medicine provider in Wellesley, Massachusetts, licensed in Massachusetts (269993) and active in the NPI registry since June 2014. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1922411867
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameNANCY C HAFFCredential: MD
Location Address70 HASTINGS ST STE 200Wellesley, MA 02481-5439
Mailing Address70 Hastings St Ste 200Wellesley, MA 02481-5439 · (781) 772-8600 · Fax (781) 772-5600
Phone(781) 772-8600
Fax(781) 772-5600
Sole ProprietorNo
Enumeration DateJune 9, 2014
Last NPPES UpdateJanuary 9, 2026
NPPES CertifiedJanuary 9, 2026
✔ NPI 1922411867 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MA · 269993
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
70 HASTINGS ST STE 200, Wellesley, MA 02481
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Nancy C Haff Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show Nancy Haff reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Private Health Care Group, LLC
Same address
Internal Medicine
70 HASTINGS ST
Wellesley, MA 02481
  • Reassigned Medicare billing, Massachusetts enrollment
  • 7 clinicians in this Medicare group
NPI 1053680108 (781) 772-5500
The General Hospital Corporation
9.9 mi
General Acute Care Hospital
55 FRUIT ST, BULFINCH 360
Boston, MA 02114
  • Reassigned Medicare billing, Massachusetts enrollment
  • 6,234 clinicians in this Medicare group
NPI 1023049236 (617) 726-2000
Massachusetts General Physicians Organization Inc
9.9 mi
Dermatology
55 FRUIT ST, BUL 2
Boston, MA 02114
  • Reassigned Medicare billing, Massachusetts enrollment
  • 6,360 clinicians in this Medicare group
NPI 1801874573 (617) 724-0287

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 7

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Insertion of needle into vein for collection of blood sample 36415
This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
68 services50 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
61 services61 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
58 services43 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
37 services30 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
30 services29 patients
Administration of influenza virus vaccine G0008
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
14 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02481 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$144.11 typical visit price
range $63.72 – $189.86
Typical copayment $36.02 (range $15.93 – $47.46)
Most-billed visit code 99204
Established Patient
$111.18 typical visit price
range $21.07 – $155.29
Typical copayment $27.79 (range $5.26 – $38.82)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JULIE S COFFEY NP
Nurse Practitioner (Adult Health)
70 HASTINGS ST STE 200
WELLESLEY, MA 02481
Norfolk County (781) 772-5500
DR. DANIEL P. GAPOSCHKIN M.D/PH.D.
Internal Medicine
70 HASTINGS ST STE 200
WELLESLEY, MA 02481
Norfolk County (781) 772-8400

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Nancy Haff's NPI number?

The NPI number for Nancy Haff is 1922411867. It was assigned to this individual provider in the NPPES registry on June 9, 2014.

Where is Nancy Haff located?

Nancy Haff practices at 70 Hastings St Ste 200, Wellesley, MA 02481. The listed phone number is (781) 772-8600.

What is Nancy Haff's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Nancy Haff enrolled in Medicare?

Yes. Nancy Haff is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Nancy Haff's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nancy Haff reassigns Medicare benefits to 3 organizations: Private Health Care Group, LLC (Wellesley, MA), The General Hospital Corporation (Boston, MA) and Massachusetts General Physicians Organization Inc (Boston, MA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Nancy Haff's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Nancy Haff accept?

Health plans from Anthem Blue Cross and Blue Shield list Nancy Haff as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Nancy Haff was last updated on January 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.