Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Peter Lee Hasler, M.D.

Pediatrics Physician in Santa Barbara, CA · enumerated 2006.

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

National Provider Identifier

1841210523

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Registry record

Entity type Individual (Type 1)

Name Dr. Peter Lee Hasler

Credential M.D.

Sex Male

Practice address 300 N San Antonio Rd, Santa Barbara, CA, 93110

Phone (805) 681-5473

Fax (805) 681-5200

Enumeration date Jul 19, 2006

Last updated in NPPES Dec 13, 2011

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License G49237 (CA) Primary

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
G49237	Other	CA	MED LICENSE
00G492370	Medicaid	CA	-

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

Is NPI 1841210523 active?

Yes, as of the latest NPPES snapshot, NPI 1841210523 is active (record last updated 2011-12-13).

How do I verify Peter Hasler's NPI record?

Cross-check NPI 1841210523 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Physicians' Medical Group Public Health & General Preventive Medicine Physician · Santa Barbara, CA NPI 1083689368 Santa Barbara County Public Health Dept Public Health & General Preventive Medicine Physician · Santa Barbara, CA NPI 1013958172 Santa Barbara County Auditor General Acute Care Hospital · Santa Barbara, CA NPI 1134162613 Santa Barbara County Public Health Dept Pediatrics Physician · Santa Barbara, CA NPI 1750326435 Santa Barbara County Public Health Dept Family Medicine Physician · Santa Barbara, CA NPI 1417987959 Santa Barbara County Public Health Dept Public Health & General Preventive Medicine Physician · Santa Barbara, CA NPI 1144250788 Josephine Preciado Internal Medicine Physician · Santa Barbara, CA NPI 1013948256 Elliot Schulman Family Medicine Physician · Santa Barbara, CA NPI 1760405286

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-12-13.