HUAN GUAN O.D.
NPI 1336379247
Optometrist in Davis, CA

Q: What is Huan Guan's NPI number?

The NPI number for Huan Guan is 1336379247. It was assigned to this individual provider in the NPPES registry on July 27, 2009.

Q: What is Huan Guan's specialty?

The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.

Q: When was this NPI record last updated?

The NPPES record for Huan Guan was last updated on February 13, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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 July 27, 2009PECOS Enrolled

1 SHIELDS AVE, DAVIS, CA 95616(530) 752-2300 Get Directions Write a Review

NPPES record last updated: February 13, 2020. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Huan Guan O.d. NPPES

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

HUAN GUAN O.D. (NPI 1336379247) is an individual optometrist in Davis, California, licensed in California (OPT 13801 TLG) and active in the NPI registry since July 2009. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1336379247

Entity TypeIndividualFemale

Primary Taxonomy152W00000X

Provider Legal NameHUAN GUANCredential: O.D.

Location Address1 SHIELDS AVEDavis, CA 95616-5270

Mailing Address1 Shields AveDavis, CA 95616-5200 · (530) 752-1035 · Fax (530) 754-5842

Phone(530) 752-2300

Sole ProprietorNo

Enumeration DateJuly 27, 2009

Last NPPES UpdateFebruary 13, 2020

✔ NPI 1336379247 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOptometristEye and Vision Services Providers

Taxonomy Code152W00000X

License✔ Licensed in CA · OPT 13801 TLG

Definition

Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.

1 SHIELDS AVE, Davis, CA 95616

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Huan Guan O.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 Huan Guan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Regents Of The Univ Of Ca

Same address

Medical Microbiology

3146 TUPPER HALL
Davis, CA 95616

Reassigned Medicare billing, California enrollment
2,570 clinicians in this Medicare group

NPI 1053304071 (530) 752-9402

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95616 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

$137.20 typical visit price

range $60.44 – $180.85

Typical copayment $34.30 (range $15.11 – $45.21)

Most-billed visit code 99204

Established Patient

$75.03 typical visit price

range $19.88 – $148.15

Typical copayment $18.75 (range $4.97 – $37.03)

Most-billed visit code 99213

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

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. JOHN IBARRA M.D.

Specialist

1 SHIELDS AVE
DAVIS, CA 95616

Yolo County (530) 752-2300

MIKA BROWN

Counselor (Mental Health)

1 SHIELDS AVE
DAVIS, CA 95616

Yolo County (530) 752-2300

NAOMI SAKAI

Psychologist (Counseling)

1 SHIELDS AVE, CAPS, 219 NORTH HALL, UNIVERSITY OF CALIFORNIA, DAVIS
DAVIS, CA 95616

Yolo County (530) 752-5665

RACHAEL MACK RD

Dietitian, Registered (Nutrition, Sports Dietetics)

1 SHIELDS AVE
DAVIS, CA 95616

Yolo County (530) 304-2104

DR. TATUM K PHAN PH.D.

Psychologist (Counseling)

1 SHIELDS AVE, STUDENT HEALTH & COUNSELING SERVICES - UC DAVIS
DAVIS, CA 95616

Yolo County (530) 752-0871

ERIC SALES MD

Pediatrics (Sports Medicine)

1 SHIELDS AVE
DAVIS, CA 95616

Yolo County (530) 752-8356

UC DAVIS STUDENT HEALTH AND COUNSELING SERVICES

Clinic/Center (Student Health)

1 SHIELDS AVE, SHCS
DAVIS, CA 95616

Yolo County (530) 752-2300

DR. OLIVIA ALISON KNIZEK PH.D.

Psychologist (Counseling)

1 SHIELDS AVE
DAVIS, CA 95616

Yolo County (530) 752-0871

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 Huan Guan's NPI number?

The NPI number for Huan Guan is 1336379247. It was assigned to this individual provider in the NPPES registry on July 27, 2009.

Where is Huan Guan located?

Huan Guan practices at 1 Shields Ave, Davis, CA 95616. The listed phone number is (530) 752-2300.

What is Huan Guan's specialty?

The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.

Is Huan Guan enrolled in Medicare?

Yes. Huan Guan is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Huan Guan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Huan Guan reassigns Medicare benefits to Regents Of The Univ Of Ca (Davis, CA). The 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 Huan Guan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Huan Guan accept?

Health plans from Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and Providence Health Plan list Huan Guan as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Huan Guan was last updated on February 13, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.