IVAN DAVID ZEITZ MD
NPI 1235170895
Anesthesiology in San Francisco, CA

Q: What is Ivan Zeitz's NPI number?

The NPI number for Ivan Zeitz is 1235170895. It was assigned to this individual provider in the NPPES registry on June 8, 2006.

Q: What is Ivan Zeitz's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Ivan Zeitz was last updated on July 12, 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.

Active since June 08, 2006PECOS Enrolled

3700 CALIFORNIA ST, SAN FRANCISCO, CA 94118(415) 719-0000 Get Directions Write a Review

NPPES record last updated: July 12, 2007. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Ivan David Zeitz Md NPPES

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

IVAN DAVID ZEITZ MD (NPI 1235170895) is an individual anesthesiology provider in San Francisco, California, licensed in California (A79390) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1235170895

Entity TypeIndividualMale

Primary Taxonomy207L00000X

Provider Legal NameIVAN DAVID ZEITZCredential: MD

Location Address3700 CALIFORNIA STSan Francisco, CA 94118-1618

Mailing AddressPo Box 39000, Dept 33995San Francisco, CA 94139-0001 · (503) 372-2740 · Fax (503) 372-2754

Phone(415) 719-0000

Sole ProprietorNo

Enumeration DateJune 8, 2006

Last NPPES UpdateJuly 12, 2007

✔ NPI 1235170895 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians

Taxonomy Code207L00000X

License✔ Licensed in CA · A79390

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.

3700 CALIFORNIA ST, San Francisco, CA 94118

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Other Identifiers 3

Medicare UPINI05599

Medicaid00A793900CA

Medicare ID-Type Unspecified00A793900CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ivan David Zeitz Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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

Medicare enrollment records show Ivan Zeitz reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Ucsf Medical Group Business Services

1.6 mi

Internal Medicine

400 PARNASSUS AVE
San Francisco, CA 94122

Reassigned Medicare billing, California enrollment
5,544 clinicians in this Medicare group

NPI 1477624104 (415) 353-2808

University Of California San Francisco

1.6 mi

Internal Medicine

400 PARNASSUS AVE
San Francisco, CA 94143

Reassigned Medicare billing, California enrollment
5,645 clinicians in this Medicare group

NPI 1164512851 (415) 476-1000

University Anesthesia Medical Group

1.6 mi

Anesthesiology

505 PARNASSUS AVE
San Francisco, CA 94143

Reassigned Medicare billing, California enrollment
723 clinicians in this Medicare group

NPI 1528137296 (415) 476-1000

G2 Anesthesia PC

46 mi

Anesthesiology

15466 LOS GATOS BLVD STE 109-297
Los Gatos, CA 95032

Reassigned Medicare billing, California enrollment
140 clinicians in this Medicare group

NPI 1487214698 (408) 354-2114

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 4

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 other procedure on large bowel using an endoscope 00811

Anesthesia for an endoscopic procedure on the large bowel ensures comfort and relaxation during the procedure. You'll be given medication to make you drowsy or asleep, eliminating any discomfort. The medication can be administered through a vein or inhaled.

108 services108 patients

Anesthesia for exam of colon using an endoscope 00812

Anesthesia for a colon examination with an endoscope is a method used to ensure comfort during the procedure. It involves administering medication to help you relax or sleep, thus reducing discomfort as the endoscope, a thin, flexible tube, is navigated through your colon.

45 services45 patients

Anesthesia for procedure on small and large bowel using an endoscope 00813

Anesthesia for an endoscopic procedure on the small and large bowel ensures comfort and relaxation during the procedure. It involves administering medicine to help you sleep or feel drowsy. This allows the doctor to examine your bowels without causing you discomfort or pain.

44 services44 patients

Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 00731

This procedure involves the use of an endoscope, a flexible tube with a light and camera, to examine your esophagus, stomach, or upper small bowel. Anesthesia ensures you are comfortable and pain-free during the procedure.

37 services36 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.

DAVID HOWARD IRWIN MD

Anesthesiology

3700 CALIFORNIA ST
SAN FRANCISCO, CA 94118

San Francisco County (415) 719-0000

STEVEN GARY VITCOV MD

Anesthesiology

3700 CALIFORNIA ST
SAN FRANCISCO, CA 94118

San Francisco County (415) 719-0000

SAM SHENG SHAY MD

Anesthesiology

3700 CALIFORNIA ST
SAN FRANCISCO, CA 94118

San Francisco County (415) 719-0000

JOHN C. MORETTO MD

Pathology (Clinical Pathology/Laboratory Medicine)

3700 CALIFORNIA ST
SAN FRANCISCO, CA 94118

San Francisco County (415) 600-2200

CARRIE HAVERTY MS, CGC

Genetic Counselor, MS

3700 CALIFORNIA ST, CALIFORNIA PACIFIC MEDICAL CENTER, G330
SAN FRANCISCO, CA 94118

San Francisco County (415) 600-2601

RICHARD GARCIA-KENNEDY MD

Pathology (Clinical Pathology/Laboratory Medicine)

3700 CALIFORNIA ST
SAN FRANCISCO, CA 94118

San Francisco County (415) 600-2200

ZANETA CHA

Genetic Counselor, MS

3700 CALIFORNIA ST
SAN FRANCISCO, CA 94118

San Francisco County (415) 600-6400

MRS. KENDALL PLAMANN GLYNN MS, CGC

Genetic Counselor, MS

3700 CALIFORNIA ST, G330
SAN FRANCISCO, CA 94118

San Francisco County (415) 600-2681

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 Ivan Zeitz's NPI number?

The NPI number for Ivan Zeitz is 1235170895. It was assigned to this individual provider in the NPPES registry on June 8, 2006.

Where is Ivan Zeitz located?

Ivan Zeitz practices at 3700 California St, San Francisco, CA 94118. The listed phone number is (415) 719-0000.

What is Ivan Zeitz's specialty?

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

Is Ivan Zeitz enrolled in Medicare?

Yes. Ivan Zeitz is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Ivan Zeitz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ivan Zeitz reassigns Medicare benefits to 4 organizations: Ucsf Medical Group Business Services (San Francisco, CA), University Of California San Francisco (San Francisco, CA), University Anesthesia Medical Group (San Francisco, CA) and G2 Anesthesia PC (Los Gatos, 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 Ivan Zeitz'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 Ivan Zeitz was last updated on July 12, 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.