Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

ROBERT D PATTERSON MD
NPI 1265400964
Specialist - Research Study in Lexington, MA

Q: What is Robert Patterson's NPI number?

The NPI number for Robert Patterson is 1265400964. It was assigned to this individual provider in the NPPES registry on March 9, 2006.

Q: What is Robert Patterson's specialty?

The primary specialty registered for this NPI is Specialist, specializing in Research Study, with taxonomy code 1744R1102X.

Q: When was this NPI record last updated?

The NPPES record for Robert Patterson was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 38 days 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.

Active since March 09, 2006PECOS Enrolled

21 BLOSSOM ST, LEXINGTON, MA 02421(617) 510-1318 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jul 13, 2026, Sep 11, 2025 (2 updates tracked since 2025).

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About Robert D Patterson Md NPPES

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

ROBERT D PATTERSON MD (NPI 1265400964) is an individual research study provider in Lexington, Massachusetts, licensed in Massachusetts (28842) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1265400964

Entity TypeIndividualMale

Primary Taxonomy1744R1102X

Provider Legal NameROBERT D PATTERSONCredential: MD

Location Address21 BLOSSOM STLexington, MA 02421-8103

Mailing Address21 Blossom StLexington, MA 02421-8103 · (617) 510-1318

Phone(617) 510-1318

Sole ProprietorNo

Enumeration DateMarch 9, 2006

Last NPPES UpdateJuly 13, 20262 updates tracked since enumeration

✔ NPI 1265400964 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySpecialist · Research StudyOther Service Providers

Taxonomy Code1744R1102X

License✔ Licensed in MA · 28842

Also ListedSpecialistTaxonomy 174400000X · License 28842 (MA)

21 BLOSSOM ST, Lexington, MA 02421

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Harvard Pilgrim Health Care.Insurance ›

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 D Patterson 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.

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 Patterson's NPI number?

The NPI number for Robert Patterson is 1265400964. It was assigned to this individual provider in the NPPES registry on March 9, 2006.

Where is Robert Patterson located?

Robert Patterson practices at 21 Blossom St, Lexington, MA 02421. The listed phone number is (617) 510-1318.

What is Robert Patterson's specialty?

The primary specialty registered for this NPI is Specialist, specializing in Research Study, with taxonomy code 1744R1102X.

Is Robert Patterson enrolled in Medicare?

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

What insurance does Robert Patterson accept?

Health plans from Anthem Blue Cross and Blue Shield and Harvard Pilgrim Health Care list Robert Patterson 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.

When was this NPI record last updated?

The NPPES record for Robert Patterson was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 38 days 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.