1. Home
  2. Directory
  3. California
  4. San Francisco
  5. Anesthesiology
  6. NPI Profile

DR. DEAN THORSEN
NPI 1023468220
Anesthesiology in San Francisco, CA

Active since June 17, 2016PECOS EnrolledAccepts Medicare Assignment
1975 4TH ST, SAN FRANCISCO, CA 94143(415) 476-1000 Get Directions Write a Review

NPPES record last updated: December 20, 2021. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Dec 20, 2021, Jun 29, 2020, Jun 17, 2016 (3 updates tracked since 2016).

About Dr. Dean Thorsen NPPES

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

DR. DEAN THORSEN (NPI 1023468220) is an individual anesthesiology provider in San Francisco, California, licensed in California (20A17232) and active in the NPI registry since June 2016. He is enrolled in Medicare PECOS, maintains a secondary practice location in Saint Louis, and is a graduate of Other (2016).

NPPES Registry Identity

NPI1023468220
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameDR. DEAN THORSEN
Location Address1975 4TH STSan Francisco, CA 94143-2351
Mailing Address1975 4th StSan Francisco, CA 94143-2351 · (312) 550-0202
Phone(415) 476-1000
Sole ProprietorNo
Medical School CMSOtherGraduated 2016
Enumeration DateJune 17, 2016
Last NPPES UpdateDecember 20, 20213 updates tracked since enumeration
NPPES CertifiedJune 29, 2020
✔ NPI 1023468220 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
Licenses✔ Licensed in CA · 20A17232✔ Licensed in MO · 2016020425
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.
1975 4TH ST, San Francisco, CA 94143
Open in Google Maps ↗

Secondary Practice Location 1

Location 1660 S Euclid Ave, Department of AnesthesiologySaint Louis, MO 63110-1010 · Phone (314) 362-5000

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Dean Thorsen 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 ID2860815131
PECOS Enrollment IDI20210303001530
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.

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. ABBEY CORIN LEA DPT
Physical Therapist
1975 4TH ST
SAN FRANCISCO, CA 94143
San Francisco County (415) 514-2800
ZSOFIA BANHEGYI LONG MD
Pediatrics
1975 4TH ST
SAN FRANCISCO, CA 94143
San Francisco County (415) 476-5153
ISABELA COSTA ACPNP
Nurse Practitioner (Pediatrics)
1975 4TH ST
SAN FRANCISCO, CA 94143
San Francisco County (415) 514-4089
MEAGAN FUNASAKI
Pharmacist (Pediatrics)
1975 4TH ST
SAN FRANCISCO, CA 94143
San Francisco County (415) 476-1000
MS. MOLLY KOREN LCSW
Social Worker (Clinical)
1975 4TH ST
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-7648
COLBEY RICKLEFS MD
Pediatrics (Adolescent Medicine)
1975 4TH ST
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-2002
KARA MORROW NP
Nurse Practitioner (Neonatal)
1975 4TH ST
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-1565
MELINDA ASHLEY KACZMAREK
Nurse Practitioner (Pediatrics, Critical Care)
1975 4TH ST
SAN FRANCISCO, CA 94143
San Francisco County (415) 476-1000

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 Dean Thorsen's NPI number?

The NPI number for Dean Thorsen is 1023468220. It was assigned to this individual provider in the NPPES registry on June 17, 2016.

Where is Dean Thorsen located?

Dean Thorsen practices at 1975 4th St, San Francisco, CA 94143. The listed phone number is (415) 476-1000.

What is Dean Thorsen's specialty?

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

Is Dean Thorsen enrolled in Medicare?

Yes. Dean Thorsen 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.

When was this NPI record last updated?

The NPPES record for Dean Thorsen was last updated on December 20, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.