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HARRY FISK BOWLES M.D.
NPI 1255355251
Anesthesiology in Pasadena, CA

Active since July 26, 2006PECOS EnrolledAccepts Medicare Assignment
100 W CALIFORNIA BLVD, PASADENA, CA 91105(626) 397-5012(626) 397-2912 Get Directions Write a Review

NPPES record last updated: November 1, 2010. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Harry Fisk Bowles M.d. NPPES

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

HARRY FISK BOWLES M.D. (NPI 1255355251) is an individual anesthesiology provider in Pasadena, California, licensed in California (G61794) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Southern California Keck School Of Medicine (1986).

NPPES Registry Identity

NPI1255355251
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameHARRY FISK BOWLESCredential: M.D.
Location Address100 W CALIFORNIA BLVDPasadena, CA 91105-3010
Mailing AddressPo Box 80278City Of Industry, CA 91716-8278 · (503) 372-2796
Phone(626) 397-5012
Fax(626) 397-2912
Sole ProprietorYes
Medical School CMSUniversity Of Southern California Keck School Of MedicineGraduated 1986
Enumeration DateJuly 26, 2006
Last NPPES UpdateNovember 1, 2010
✔ NPI 1255355251 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in CA · G61794
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.
100 W CALIFORNIA BLVD, Pasadena, CA 91105
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Other Identifiers 4

Medicare UPINE47629
Medicare ID-Type UnspecifiedWG61794ACA
Other00G617940CA · Blue Shield
Medicaid00G617940CA

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

Harry Fisk Bowles 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 ID2668374463
PECOS Enrollment IDI20110308000986
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

3

Medicare enrollment records show Harry Bowles reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Pacific Valley Medical Group
0.3 mi
Anesthesiology
100 W CALIFORNIA BLVD
Pasadena, CA 91105
  • Reassigned Medicare billing, California enrollment
  • 214 clinicians in this Medicare group
NPI 1851312862 (626) 397-5000
San Mateo County
321 mi
Community/Behavioral Health
2415 UNIVERSITY AVE STE 301
East Palo Alto, CA 94303
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: County Of San Mateo
  • 597 clinicians in this Medicare group
NPI 1710086301 (650) 363-4030
Anesthesiology Consultants Of Marin
360 mi
Anesthesiology
250 BON AIR RD
Greenbrae, CA 94904
  • Reassigned Medicare billing, California enrollment
  • 36 clinicians in this Medicare group
NPI 1578580544 (415) 927-4070

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

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Anesthesia for x-ray or radiation therapy 01922
Anesthesia for x-ray or radiation therapy involves administering medication to help you relax or sleep during the procedure. It's used to ensure comfort, minimize movement, and reduce anxiety. The type of anesthesia used depends on the procedure and patient's health.
12 services12 patients

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.

SARAH STEPHENS NP
Nurse Practitioner (Acute Care)
100 W CALIFORNIA BLVD
PASADENA, CA 91105
Los Angeles County (626) 397-8300
ROMELIA JALEH BATANG GARCIA RNFA
Registered Nurse (Registered Nurse First Assistant)
100 W CALIFORNIA BLVD
PASADENA, CA 91105
Los Angeles County (626) 397-5012
DR. RICHARD A. REED MEDICAL DOCTOR
Radiology (Diagnostic Radiology)
100 W CALIFORNIA BLVD
PASADENA, CA 91105
Los Angeles County (626) 397-5139
DR. HENRY LEVENSON M.D.
Pain Medicine (Pain Medicine)
100 W CALIFORNIA BLVD
PASADENA, CA 91105
Los Angeles County (626) 256-6010
PASADENA HOSPITAL ASSOCIATION, LTD.
Rehabilitation Unit
100 W CALIFORNIA BLVD
PASADENA, CA 91105
Los Angeles County (626) 397-5555
ANIL K HANUMAN D,O.
Hospitalist
100 W CALIFORNIA BLVD
PASADENA, CA 91105
Los Angeles County (626) 397-8300
DR. NICHOLAS WITHROW GRECO M.D.
Emergency Medicine
100 W CALIFORNIA BLVD
PASADENA, CA 91105
Los Angeles County (626) 397-5112
DR. MINDY EVE TITTIGER M.D.
Internal Medicine
100 W CALIFORNIA BLVD
PASADENA, CA 91105
Los Angeles County (626) 352-1444

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 Harry Bowles's NPI number?

The NPI number for Harry Bowles is 1255355251. It was assigned to this individual provider in the NPPES registry on July 26, 2006.

Where is Harry Bowles located?

Harry Bowles practices at 100 W California Blvd, Pasadena, CA 91105. The listed phone number is (626) 397-5012.

What is Harry Bowles's specialty?

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

Is Harry Bowles enrolled in Medicare?

Yes. Harry Bowles 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 Harry Bowles's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Harry Bowles reassigns Medicare benefits to 3 organizations: Pacific Valley Medical Group (Pasadena, CA), San Mateo County (East Palo Alto, CA) and Anesthesiology Consultants Of Marin (Greenbrae, 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 Harry Bowles'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 Harry Bowles was last updated on November 1, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.