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ROBERT BENJAMIN DIENER M.D.
NPI 1881884989
Psychiatry & Neurology - Psychiatry in Bridgewater, MA

Active since July 26, 2007PECOS EnrolledAccepts Medicare Assignment
BRIDGEWATER STATE HOSPITAL, 24 ADMINISTRATION RD., BRIDGEWATER, MA 02234(508) 279-4500 Get Directions Write a Review

NPPES record last updated: July 26, 2007. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Robert Benjamin Diener M.d. NPPES

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

ROBERT BENJAMIN DIENER M.D. (NPI 1881884989) is an individual psychiatry provider in Bridgewater, Massachusetts, licensed in Massachusetts (73381) and active in the NPI registry since July 2007. He is enrolled in Medicare PECOS and is a graduate of Tufts University School Of Medicine (1989).

NPPES Registry Identity

NPI1881884989
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameROBERT BENJAMIN DIENERCredential: M.D.
Location AddressBRIDGEWATER STATE HOSPITAL, 24 ADMINISTRATION RD.Bridgewater, MA 02234
Mailing Address40 Hall St, #2Jamaica Plain, MA 02130-3220 · (508) 279-4500
Phone(508) 279-4500
Sole ProprietorNo
Medical School CMSTufts University School Of MedicineGraduated 1989
Enumeration DateJuly 26, 2007
✔ NPI 1881884989 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in MA · 73381
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
BRIDGEWATER STATE HOSPITAL, Bridgewater, MA 02234
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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 and accepts Medicare assignment

Robert Benjamin Diener M.d. 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 ID9739499278
PECOS Enrollment IDI20151112001039
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 Robert Benjamin Diener reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Bay Cove Human Services, Inc
29 mi
Community/Behavioral Health
31 BOWKER ST
Boston, MA 02114
  • Reassigned Medicare billing, Massachusetts enrollment
  • 9 clinicians in this Medicare group
NPI 1386702264 (617) 371-3000
Steward Medical Group, Inc
31 mi
Specialist
9 GALEN ST
Watertown, MA 02472
  • Reassigned Medicare billing, Massachusetts enrollment
  • 1,103 clinicians in this Medicare group
NPI 1629398219 (615) 467-4474

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.
35 services11 patients

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 Benjamin Diener's NPI number?

The NPI number for Robert Benjamin Diener is 1881884989. It was assigned to this individual provider in the NPPES registry on July 26, 2007.

Where is Robert Benjamin Diener located?

Robert Benjamin Diener practices at Bridgewater State Hospital 24 Administration Rd., Bridgewater, MA 02234. The listed phone number is (508) 279-4500.

What is Robert Benjamin Diener's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Robert Benjamin Diener enrolled in Medicare?

Yes. Robert Benjamin Diener 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 organizations bill Medicare for Robert Benjamin Diener's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Robert Benjamin Diener reassigns Medicare benefits to 2 organizations: Bay Cove Human Services, Inc (Boston, MA) and Steward Medical Group, Inc (Watertown, 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 Robert Benjamin Diener'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 Robert Benjamin Diener was last updated on July 26, 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.