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MARY ELIZABETH HAMEL M.D.
NPI 1821020355
Internal Medicine in Boston, MA

Active since July 07, 2006PECOS Enrolled
HEALTH CARE ASSOCIATES, 330 BROOKLINE AVENUE, BOSTON, MA 02215(617) 667-2700 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Mary Elizabeth Hamel M.d. NPPES

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

MARY ELIZABETH HAMEL M.D. (NPI 1821020355) is an individual internal medicine provider in Boston, Massachusetts, licensed in Massachusetts (74251) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1821020355
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameMARY ELIZABETH HAMELCredential: M.D.
Location AddressHEALTH CARE ASSOCIATES, 330 BROOKLINE AVENUEBoston, MA 02215
Mailing Address142 Hillcrest RdNeedham, MA 02492-3919 · (617) 667-2700
Phone(617) 667-2700
Sole ProprietorNo
Enumeration DateJuly 7, 2006
Last NPPES UpdateJuly 8, 2007
✔ NPI 1821020355 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 · 74251
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.
HEALTH CARE ASSOCIATES, Boston, MA 02215
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mary Elizabeth Hamel M.d. 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

2

Medicare enrollment records show Mary Elizabeth Hamel reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Beth Israel Deaconess Medical Center, Inc.
2.7 mi
General Acute Care Hospital
330 BROOKLINE AVE, ST 207
Boston, MA 02215
  • Reassigned Medicare billing, Massachusetts enrollment
  • 1,477 clinicians in this Medicare group
NPI 1548202641 (617) 667-1961
Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc
2.7 mi
Internal Medicine
330 BROOKLINE AVE
Boston, MA 02215
  • Reassigned Medicare billing, Massachusetts enrollment
  • 2,579 clinicians in this Medicare group
NPI 1194765438 (617) 754-9600

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

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.

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.
15 services15 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02215 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.

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 Mary Elizabeth Hamel's NPI number?

The NPI number for Mary Elizabeth Hamel is 1821020355. It was assigned to this individual provider in the NPPES registry on July 7, 2006.

Where is Mary Elizabeth Hamel located?

Mary Elizabeth Hamel practices at Health Care Associates 330 Brookline Avenue, Boston, MA 02215. The listed phone number is (617) 667-2700.

What is Mary Elizabeth Hamel's specialty?

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

Is Mary Elizabeth Hamel enrolled in Medicare?

Yes. Mary Elizabeth Hamel is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Mary Elizabeth Hamel's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mary Elizabeth Hamel reassigns Medicare benefits to 2 organizations: Beth Israel Deaconess Medical Center, Inc. (Boston, MA) and Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr 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 Mary Elizabeth Hamel's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Mary Elizabeth Hamel was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years 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.