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MIRIAM NATHAN MD
NPI 1225590482
Internal Medicine in Boston, MA

Active since April 04, 2019PECOS EnrolledAccepts Medicare Assignment
801 MASSACHUSETTS AVE, CROSSSTOWN 2, BOSTON, MA 01655(617) 414-7399(617) 414-4676 Get Directions Write a Review

NPPES record last updated: May 15, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 15, 2024, Apr 4, 2019 (2 updates tracked since 2019).

About Miriam Nathan Md NPPES

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

MIRIAM NATHAN MD (NPI 1225590482) is an individual internal medicine provider in Boston, Massachusetts, licensed in Massachusetts (1014942) and active in the NPI registry since April 2019. She is enrolled in Medicare PECOS, is affiliated with Boston Medical Center, and is a graduate of Other (2019).

NPPES Registry Identity

NPI1225590482
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameMIRIAM NATHANCredential: MD
Location Address801 MASSACHUSETTS AVE, CROSSSTOWN 2Boston, MA 01655-0002
Mailing Address960 Massachusetts Ave Ste 2Boston, MA 02118-2690
Phone(617) 414-7399
Fax(617) 414-4676
Sole ProprietorNo
Medical School CMSOtherGraduated 2019
Enumeration DateApril 4, 2019
Last NPPES UpdateMay 15, 20242 updates tracked since enumeration
NPPES CertifiedMay 9, 2024
✔ NPI 1225590482 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 · 1014942
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.
801 MASSACHUSETTS AVE, Boston, MA 01655
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include WellSense Health Plan.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Miriam Nathan Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6204162407
PECOS Enrollment IDI20240610000599
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 Reassignment

Medicare enrollment records show Miriam Nathan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Evans Medical Foundation, Inc.
0.2 mi
Internal Medicine
1 BOSTON MEDICAL CTR PL
Boston, MA 02118
  • Reassigned Medicare billing, Massachusetts enrollment
  • 573 clinicians in this Medicare group
NPI 1912954124 (617) 358-3510

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 2

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
172 services38 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
18 services18 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Boston Medical Center

Acute Care Hospitals · Boston, MA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220031
Location1 Boston Medical Center PlaceBoston, MA 02118 · Suffolk County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01655 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
$134.47 typical visit price
range $58.86 – $177.36
Typical copayment $33.61 (range $14.71 – $44.34)
Most-billed visit code 99204
Established Patient
$103.48 typical visit price
range $19.11 – $144.84
Typical copayment $25.87 (range $4.77 – $36.21)
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 Miriam Nathan's NPI number?

The NPI number for Miriam Nathan is 1225590482. It was assigned to this individual provider in the NPPES registry on April 4, 2019.

Where is Miriam Nathan located?

Miriam Nathan practices at 801 Massachusetts Ave Crossstown 2, Boston, MA 01655. The listed phone number is (617) 414-7399.

What is Miriam Nathan's specialty?

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

Is Miriam Nathan enrolled in Medicare?

Yes. Miriam Nathan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Miriam Nathan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Miriam Nathan reassigns Medicare benefits to Evans Medical Foundation, Inc. (Boston, MA). The 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 Miriam Nathan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Miriam Nathan accept?

Health plans from WellSense Health Plan list Miriam Nathan 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.

Is Miriam Nathan affiliated with any hospitals?

According to CMS data, Miriam Nathan is affiliated with Boston Medical Center.

When was this NPI record last updated?

The NPPES record for Miriam Nathan was last updated on May 15, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.