Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Robert S Warren, MD

Hospice and Palliative Medicine (Family Medicine) Physician in Danvers, MA · enumerated 2006.

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

National Provider Identifier

1336181270

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Registry record

Entity type Individual (Type 1)

Name Robert S Warren

Credential MD

Sex Male

Practice address 75 Sylvan St, Suite B-102, Danvers, MA, 01923

Phone (978) 774-7566

Fax (781) 373-6690

Enumeration date Jun 12, 2006

Last updated in NPPES Oct 12, 2016

Taxonomy & licenses

207QH0002X Hospice and Palliative Medicine (Family Medicine) Physician Allopathic & Osteopathic Physicians · License 161223 (MA) Primary

207QG0300X Geriatric Medicine (Family Medicine) Physician Allopathic & Osteopathic Physicians · License 161223 (MA) Secondary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 161223 (MA) Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
051947	Other	PA	HIGHMARK BLUE SHIELD
2512098	Other	PA	AETNA HMO
7260205	Other	PA	AETNA PPO
9402714	Other	PA	PHCS
17713-MD066169L	Other	PA	HEALTH PARTNERS
080182395	Other	PA	RRM
1164025	Other	PA	KEYSTONE MERCY
0066867000	Other	PA	IBC - PC/KHPE
10938422	Other	PA	CAQH ID#
4519969	Other	PA	CIGNA HMO/PPO
0182398003	Other	PA	AMERICHOICE (UHC MA PLAN)
0018239800004	Medicaid	PA	-

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 is the NPI number for Robert Warren?

The National Provider Identifier (NPI) for Robert Warren is 1336181270, a Type 1 (individual) record in the CMS NPPES registry.

Where does Robert Warren practice?

The practice location on file with NPPES is in Danvers, MA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-10-12.