Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Robert N. Greenberg, MD

Q: What type of organization is Robert N. Greenberg, MD?

Robert N. Greenberg, MD is registered in NPPES as a Surgery Physician (its primary provider taxonomy).

Surgery Physician in Reading, PA · enumerated 2007 · authorized official Robert Greenberg, President.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1275659997

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)

Legal business name Robert N. Greenberg, MD

Practice address 2211 Quarry Dr, Suite E-61, Reading, PA, 19609

Phone (610) 670-4959

Fax (610) 670-5150

Enumeration date Mar 22, 2007

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License MD-025027-E (PA) Primary

Authorized official

Name Robert Greenberg

Title President

Phone (610) 670-4959

Other identifiers

Identifier	Type	State	Issuer
02359200	Other	PA	KHPC AND KSB
1002821	Other	PA	MERCY
00020823	Other	PA	IBC
0790430000	Other	PA	KHPE
020823	Other	PA	BS
02359200	Other	PA	CAP BC
123339	Other	PA	HEALTH AMERICA HLTH ASSUR
39691	Other	PA	GEISINGER
116220	Other	PA	UNISON
2318194	Other	PA	AETNA
0009648670002	Medicaid	PA	-
7049177	Other	PA	GATEWAY

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What type of organization is Robert N. Greenberg, MD?

Robert N. Greenberg, MD is registered in NPPES as a Surgery Physician (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Providers at this address

Browse all →

Rick Milen Prosthetist · West Lawn, PA NPI 1376540666 Craig Kimmel Otolaryngology Physician · West Lawn, PA NPI 1659370195 Shad Lewis Dentist · Reading, PA NPI 1093809147 Lehigh Valley Pain Management Magnetic Resonance Imaging Radiologic Technologist · Reading, PA NPI 1134218068 Mobile Fce Consultants, LLC Specialist · Reading, PA NPI 1417159757 Nexstep Inc. Prosthetic/Orthotic Supplier · West Lawn, PA NPI 1962609081 Kimmel Nasal and Sinus Center Otolaryngology Physician · West Lawn, PA NPI 1952661134 Rosewood Medical Consulting, PC Specialist · West Lawn, PA NPI 1508294323

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.