ERNEST S HAN MD
NPI 1639247950
Obstetrics & Gynecology - Gynecologic Oncology in Duarte, CA

Q: What is Ernest Han's NPI number?

The NPI number for Ernest Han is 1639247950. It was assigned to this individual provider in the NPPES registry on December 4, 2006.

Q: What is Ernest Han's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Gynecologic Oncology, with taxonomy code 207VX0201X.

Q: When was this NPI record last updated?

The NPPES record for Ernest Han was last updated on November 27, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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 04, 2006PECOS EnrolledAccepts Medicare Assignment

99.12/100

CMS Quality Rating

1500 E DUARTE ROAD, DUARTE, CA 91010(626) 256-4673(626) 408-3911 Get Directions Write a Review

NPPES record last updated: November 27, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 29, 2020, Jun 14, 2019 (2 updates tracked since 2019).

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About Ernest S Han Md NPPES

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

ERNEST S HAN MD (NPI 1639247950) is an individual gynecologic oncology provider in Duarte, California, licensed in California (A85994) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Texas Medical Branch At Galveston (2000).

NPPES Registry Identity

NPI1639247950

Entity TypeIndividualMale

Primary Taxonomy207VX0201X

Provider Legal NameERNEST S HANCredential: MD

Location Address1500 E DUARTE ROADDuarte, CA 91010-3012

Mailing Address1333 S Mayflower Ave 2nd FlMonrovia, CA 91016-5266 · (626) 775-3514 · Fax (626) 408-3911

Phone(626) 256-4673

Fax(626) 408-3911

Sole ProprietorNo

Medical School CMSUniversity Of Texas Medical Branch At GalvestonGraduated 2000

Enumeration DateDecember 4, 2006

Last NPPES UpdateNovember 27, 20232 updates tracked since enumeration

NPPES CertifiedOctober 29, 2020

✔ NPI 1639247950 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & Gynecology · Gynecologic OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207VX0201X

License✔ Licensed in CA · A85994

Definition

An obstetrician/gynecologist who provides consultation and comprehensive management of patients with gynecologic cancer, including those diagnostic and therapeutic procedures necessary for the total care of the patient with gynecologic cancer and resulting complications.

1500 E DUARTE ROAD, Duarte, CA 91010

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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

Ernest S Han Md 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 ID648242826

PECOS Enrollment IDI20040809000705

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 Ernest Han reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

City Of Hope Medical Foundation

0.2 mi

Hematology & Oncology

1500 DUARTE RD
Duarte, CA 91010

Reassigned Medicare billing, California enrollment
1,335 clinicians in this Medicare group

NPI 1871886366 (626) 256-4673

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.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

145 services124 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

89 services64 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

44 services15 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

27 services27 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91010 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$187.60 typical visit price

range $62.96 – $187.60

Typical copayment $46.90 (range $15.74 – $46.90)

Most-billed visit code 99205

Established Patient

$109.96 typical visit price

range $20.84 – $153.61

Typical copayment $27.49 (range $5.21 – $38.40)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

99.12/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

85.23

Promoting Interoperability

100

Improvement Activities

Other Providers at the Same Location NPPES 13

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

SHAILA MERCHANT MSC, MHSC, MD

Surgery (Surgical Oncology)

1500 E DUARTE ROAD, MOB L001
DUARTE, CA 91010

Los Angeles County (626) 256-4673

MR. CAREY RAMIREZ NP

Nurse Practitioner (Adult Health)