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ROBERT J. MASTER MD
NPI 1518048131
Internal Medicine in Cambridge, MA

Active since October 18, 2006PECOS Enrolled
9A FOREST ST, CAMBRIDGE, MA 02140(617) 680-6892(857) 678-4049 Get Directions Write a Review

NPPES record last updated: September 17, 2024. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Robert J. Master Md NPPES

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

ROBERT J. MASTER MD (NPI 1518048131) is an individual internal medicine provider in Cambridge, Massachusetts, licensed in Massachusetts (35355) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1518048131
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameROBERT J. MASTERCredential: MD
Location Address9A FOREST STCambridge, MA 02140-1501
Mailing Address9a Forest StCambridge, MA 02140-1501 · (617) 680-6892 · Fax (857) 678-4049
Phone(617) 680-6892
Fax(857) 678-4049
Sole ProprietorNo
Enumeration DateOctober 18, 2006
Last NPPES UpdateSeptember 17, 2024
NPPES CertifiedSeptember 17, 2024
✔ NPI 1518048131 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 · 35355
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.
9A FOREST ST, Cambridge, MA 02140
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Other Identifiers 3

Other66923UHMA · Hphc Number
OtherM08434MA · Bcbs Number
Medicaid0138401MA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Robert J. Master 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.

Areas of Expertise CMS Part B claims 4

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.

Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes 99349
An established patient home visit is a medical appointment conducted at your home, typically lasting around 40 minutes. This service is ideal for patients who may find it difficult to travel to a healthcare facility. During this visit, a healthcare professional will evaluate your health status, manage your care, and answer any health-related questions you may have.
38 services26 patients
Transitional care management services for problem of at least moderate complexity 99495
Transitional care management services focus on coordinating and managing your care after you leave the hospital. For moderate complexity problems, this involves managing your medications, arranging further treatments, and ensuring you have the necessary follow-ups.
32 services14 patients
Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes 99348
An established patient home visit is a 25-minute appointment where a healthcare provider visits you at your home. This service is for patients who have previously been seen by the provider. It includes a check-up and discussion about your health concerns.
31 services22 patients
Residence visit for new patient with moderate level of medical decision making, per day, if using time, at least 60 minutes 99344
A new patient home visit is a comprehensive service where a healthcare professional visits your home for about an hour. This visit includes an overall health assessment, discussion about your medical history, and planning for future healthcare needs. The goal is to understand your health status and provide personalized care.
16 services16 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02140 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

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

COVID SAFE AT HOME, INC.
Clinic/Center (Primary Care)
9A FOREST ST
CAMBRIDGE, MA 02140
Middlesex County (617) 680-6892

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 Master's NPI number?

The NPI number for Robert Master is 1518048131. It was assigned to this individual provider in the NPPES registry on October 18, 2006.

Where is Robert Master located?

Robert Master practices at 9A Forest St, Cambridge, MA 02140. The listed phone number is (617) 680-6892.

What is Robert Master's specialty?

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

Is Robert Master enrolled in Medicare?

Yes. Robert Master is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Robert Master was last updated on September 17, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 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.