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DR. ROBERT JAMES MAYER MD
NPI 1659361327
Internal Medicine - Medical Oncology in Boston, MA

Active since October 25, 2005PECOS EnrolledAccepts Medicare Assignment
86.28/100
CMS Quality Rating
450 BROOKLINE AVE, DANA FARBER CANCER INSTITUTE, D-1608, BOSTON, MA 02215(617) 632-3474(617) 632-2260 Get Directions Write a Review

NPPES record last updated: December 7, 2011. Verified against the NPPES registry weekly; last sync: August 30, 2026.

About Dr. Robert James Mayer Md NPPES

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

DR. ROBERT JAMES MAYER MD (NPI 1659361327) is an individual medical oncology provider in Boston, Massachusetts, licensed in Massachusetts (36776) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS, is affiliated with Brigham And Women's Hospital, and is a graduate of Harvard Medical School (1969).

NPPES Registry Identity

NPI1659361327
Entity TypeIndividualMale
Primary Taxonomy207RX0202X
Provider Legal NameDR. ROBERT JAMES MAYERCredential: MD
Location Address450 BROOKLINE AVE, DANA FARBER CANCER INSTITUTE, D-1608Boston, MA 02215-5418
Mailing Address450 Brookline Ave, D-1608Boston, MA 02215-5418 · (617) 632-3474 · Fax (617) 632-2260
Phone(617) 632-3474
Fax(617) 632-2260
Sole ProprietorYes
Medical School CMSHarvard Medical SchoolGraduated 1969
Enumeration DateOctober 25, 2005
Last NPPES UpdateDecember 7, 2011
✔ NPI 1659361327 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RX0202X
License✔ Licensed in MA · 36776
Definition
An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.
Also ListedInternal MedicineTaxonomy 207R00000X · License 36776 (MA)
Also ListedInternal Medicine · HematologyTaxonomy 207RH0000X · License 36776 (MA)
450 BROOKLINE AVE, Boston, MA 02215
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Other Identifiers 5

Medicare ID-Type UnspecifiedM08749MA
OtherM08749MA · Bcbs Ma
Medicaid2038706MA
Other730076MA · Tufts Health Plan
Medicare UPINB98640

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, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Robert James Mayer 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 ID8729028832
PECOS Enrollment IDI20050509000537
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.

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.
69 services35 patients

Hospital Affiliations CMS Care Compare

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

Brigham And Women's Hospital

Acute Care Hospitals · Boston, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220110
Location75 Francis StreetBoston, MA 02115 · Suffolk County
Emergency services Birthing friendly

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
$189.86 typical visit price
range $63.72 – $189.86
Typical copayment $47.46 (range $15.93 – $47.46)
Most-billed visit code 99205
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

86.28/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality69.36
Promoting Interoperability100
Improvement Activities40

Other Providers at the Same Location NPPES 20

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

PRABHSIMRANJOT SINGH MD
Internal Medicine (Hematology & Oncology)
450 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (617) 582-7956
SHAWN MAGUIRE PA-C
Physician Assistant
450 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (617) 582-8487
KARINA FRANCA
Genetic Counselor, MS
450 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (857) 215-2285
DR. SUZANNE JAQUETH FORREST M.D.
Pediatrics (Pediatric Hematology-Oncology)
450 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (617) 632-3270
LAUREN KIRITSY MSW, LCSW
Counselor (Mental Health)
450 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (857) 215-3448
OFIR WOLAJ MD
Internal Medicine (Hematology & Oncology)
450 BROOKLINE AVE, DANA 2058
BOSTON, MA 02215
Suffolk County (617) 632-6139
JASON BATALHA AGPCNP-BC
Nurse Practitioner
450 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (617) 632-6140
FATIMA EMRAN AMIR MS, LGC
Genetic Counselor, MS
450 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (617) 632-3729

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 Robert Mayer's NPI number?

The NPI number for Robert Mayer is 1659361327. It was assigned to this individual provider in the NPPES registry on October 25, 2005.

Where is Robert Mayer located?

Robert Mayer practices at 450 Brookline Ave Dana Farber Cancer Institute, D-1608, Boston, MA 02215. The listed phone number is (617) 632-3474.

What is Robert Mayer's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

Is Robert Mayer enrolled in Medicare?

Yes. Robert Mayer 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.

What insurance does Robert Mayer accept?

Health plans from Anthem Blue Cross and Blue Shield list Robert Mayer 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 Robert Mayer affiliated with any hospitals?

According to CMS data, Robert Mayer is affiliated with Brigham And Women's Hospital.

When was this NPI record last updated?

The NPPES record for Robert Mayer was last updated on December 7, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.