DR. MARK MIN-YOUNG AHN M.D.
NPI 1417934670
Anesthesiology in Gilroy, CA

Q: What is Mark Ahn's NPI number?

The NPI number for Mark Ahn is 1417934670. It was assigned to this individual provider in the NPPES registry on December 29, 2005.

Q: What is Mark Ahn'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 Mark Ahn was last updated on January 2, 2022. 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.

Active since December 29, 2005PECOS Enrolled

9400 N NAME UNO, GILROY, CA 95020(408) 848-2000 Get Directions Write a Review

NPPES record last updated: January 2, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jan 2, 2022, Nov 10, 2015 (2 updates tracked since 2015).

On this page

About Dr. Mark Min-young Ahn M.d. NPPES

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

DR. MARK MIN-YOUNG AHN M.D. (NPI 1417934670) is an individual anesthesiology provider in Gilroy, California, licensed in California (G81655) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1417934670

Entity TypeIndividualMale

Primary Taxonomy207L00000X

Provider Legal NameDR. MARK MIN-YOUNG AHNCredential: M.D.

Location Address9400 N NAME UNOGilroy, CA 95020-3528

Mailing Address2423 W March Ln, Ste 100Stockton, CA 95207-8250 · (800) 883-7243 · Fax (714) 647-1245

Phone(408) 848-2000

Sole ProprietorNo

Enumeration DateDecember 29, 2005

Last NPPES UpdateJanuary 2, 20222 updates tracked since enumeration

NPPES CertifiedJanuary 2, 2022

✔ NPI 1417934670 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians

Taxonomy Code207L00000X

License✔ Licensed in CA · G81655

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.

9400 N NAME UNO, Gilroy, CA 95020

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Other Identifiers 1

Medicaid00G816550CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Mark Min-young Ahn M.d. 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 Reassignment

Medicare enrollment records show Mark Ahn reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Blue Eagle Anesthesia Inc A Professional Corporation

70 mi

Anesthesiology

901 CAMPUS DR, SUITE 102
Daly City, CA 94015

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

NPI 1396822326 (650) 991-2000

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 lens surgery 00142

Anesthesia for lens surgery involves administering medication to numb the eye area, ensuring you feel no pain during the procedure. This can be a local anesthetic (numbing only the eye area) or general (where you're asleep). It helps make the surgery comfortable and stress-free.

71 services66 patients

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

Post-Anesthetic Transfer of Care Measure: Procedure Room to a Post Anesthesia Care Unit (PACU)

Percentage of patients, regardless of age, who are under the care of an anesthesia practitioner and are admitted to a PACU or other non-ICU location in which a post-anesthetic formal transfer of care protocol or checklist which includes the key transfer of…

100%230 patients5/55-star benchmark: 100%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

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.

STEPHEN TRENT SHEY

Internal Medicine