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DR. DAVID DOUGLAS LARSON M.D.
NPI 1255444535
Anesthesiology in Long Beach, CA

Active since August 17, 2006PECOS EnrolledAccepts Medicare Assignment
2801 ATLANTIC AVE, LONG BEACH, CA 90806(562) 933-2000(562) 933-1245 Get Directions Write a Review

NPPES record last updated: July 9, 2007. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. David Douglas Larson M.d. NPPES

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

DR. DAVID DOUGLAS LARSON M.D. (NPI 1255444535) is an individual anesthesiology provider in Long Beach, California, licensed in California (G55863) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Minnesota, Duluth School Of Medicine (1982).

NPPES Registry Identity

NPI1255444535
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameDR. DAVID DOUGLAS LARSONCredential: M.D.
Location Address2801 ATLANTIC AVELong Beach, CA 90806-1701
Mailing AddressPo Box 10429Newport Beach, CA 92658-0429 · (949) 417-1812 · Fax (949) 417-1803
Phone(562) 933-2000
Fax(562) 933-1245
Sole ProprietorNo
Medical School CMSUniversity Of Minnesota, Duluth School Of MedicineGraduated 1982
Enumeration DateAugust 17, 2006
Last NPPES UpdateJuly 9, 2007
✔ NPI 1255444535 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in CA · G55863
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
2801 ATLANTIC AVE, Long Beach, CA 90806
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Other Identifiers 5

Other00G558630CA · Blue Shield Id #
Medicare ID-Type UnspecifiedWG55863ACA · Medicare Id #
Other00G558630385CA · Caloptima Id #
Medicare UPINA93403CA
Medicaid00G558630CA

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

Dr. David Douglas Larson 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 ID3375726409
PECOS Enrollment IDI20110325000761
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 David Larson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

California Anesthesia Associates Medical Group, Inc.
Same address
Anesthesiology
2801 ATLANTIC AVE
Long Beach, CA 90806
  • Reassigned Medicare billing, California enrollment
  • 107 clinicians in this Medicare group
NPI 1457399933 (562) 933-2000
Cep America - Anesthesia PC
31 mi
Anesthesiology
24451 HEALTH CENTER DR
Laguna Hills, CA 92653
  • Reassigned Medicare billing, California enrollment
  • 833 clinicians in this Medicare group
NPI 1861373631 (949) 837-4500

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. DAVID C KIM M.D.
Pediatrics (Neonatal-Perinatal Medicine)
2801 ATLANTIC AVE
LONG BEACH, CA 90806
Los Angeles County (562) 933-8100
MRS. ELISHA MARIE MARTIN MSN, NP
Nurse Practitioner (Acute Care)
2801 ATLANTIC AVE
LONG BEACH, CA 90806
Los Angeles County (310) 350-8902
MICHAEL A RAYA MD
Internal Medicine
2801 ATLANTIC AVE
LONG BEACH, CA 90806
Los Angeles County (562) 426-3333
ELIZABETH MARY ZAAROUR
Physician Assistant
2801 ATLANTIC AVE
LONG BEACH, CA 90806
Los Angeles County (562) 249-4575
LONG BEACH MEMORIAL MEDICAL
Pharmacy (Community/Retail Pharmacy)
2801 ATLANTIC AVE
LONG BEACH, CA 90806
Los Angeles County (562) 933-0330
GLENN LEVINE M.D.
Pediatrics (Pediatric Critical Care Medicine)
2801 ATLANTIC AVE, 3RD FLOOR
LONG BEACH, CA 90806
Los Angeles County (562) 933-8743
DAVID KHOA CAO DO
Internal Medicine
2801 ATLANTIC AVE
LONG BEACH, CA 90806
Los Angeles County (562) 426-3333
RICHARD ERIC SWENSSON MD
Pediatrics (Pediatric Cardiology)
2801 ATLANTIC AVE
LONG BEACH, CA 90806
Los Angeles County (562) 933-3350

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 David Larson's NPI number?

The NPI number for David Larson is 1255444535. It was assigned to this individual provider in the NPPES registry on August 17, 2006.

Where is David Larson located?

David Larson practices at 2801 Atlantic Ave, Long Beach, CA 90806. The listed phone number is (562) 933-2000.

What is David Larson's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is David Larson enrolled in Medicare?

Yes. David Larson 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 David Larson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), David Larson reassigns Medicare benefits to 2 organizations: California Anesthesia Associates Medical Group, Inc. (Long Beach, CA) and Cep America - Anesthesia PC (Laguna Hills, CA). 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 David Larson'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 David Larson was last updated on July 9, 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.