Grace Shuang Zhang, MD - Medicare Ophthalmology in Santa Rosa, CA

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Grace Shuang Zhang, MD is a medicare enrolled "Ophthalmology" physician in Santa Rosa, California. She graduated from medical school in 2002 and has 23 years of diverse experience with area of expertise as Ophthalmology. She is a member of the group practice Ukiah Adventist Hospital and her current practice location is 1140 Sonoma Ave Ste 2a, Santa Rosa, California. You can reach out to her office (for appointments etc.) via phone at (312) 320-0090.

Grace Shuang Zhang is licensed to practice in California (license number C154185) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1679501670.

Contact Information

Grace Shuang Zhang, MD
1140 Sonoma Ave Ste 2a,
Santa Rosa, CA 95405-4817
(312) 320-0090
Not Available

Map and Direction




Physician's Profile

Full NameGrace Shuang Zhang
GenderFemale
SpecialityOphthalmology
Experience23 Years
Location1140 Sonoma Ave Ste 2a, Santa Rosa, California
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Grace Shuang Zhang graduated from medical school in 2002
  NPI Data:
  • NPI Number: 1679501670
  • Provider Enumeration Date: 06/29/2006
  • Last Update Date: 03/09/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 2365444742
  • Enrollment ID: I20180221002197

Medical Identifiers

Medical identifiers for Grace Shuang Zhang such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1679501670NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207W00000XOphthalmology C154185 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Adventist Health Ukiah ValleyUkiah, CAHospital
Adventist Health Howard MemorialWillits, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Ukiah Adventist Hospital6406816123109

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Grace Shuang Zhang allows following entities to bill medicare on her behalf.
Entity NamePermanente Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1073606299
PECOS PAC ID: 8921910225
Enrollment ID: O20031104000710
Entity NameCounty Of Santa Clara
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1699885079
PECOS PAC ID: 1254244973
Enrollment ID: O20040113000784
Entity NameProvidence Medical Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1285890624
PECOS PAC ID: 8921993205
Enrollment ID: O20040216001346
Entity NameUkiah Adventist Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1235120676
PECOS PAC ID: 6406816123
Enrollment ID: O20041015000818
Entity NameEye Associates Of Sebastopol Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1295729382
PECOS PAC ID: 1052362696
Enrollment ID: O20050201000776
Entity NameGrace Zhang Md Ophthalmology
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1366198566
PECOS PAC ID: 7911393558
Enrollment ID: O20220406002664

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Grace Shuang Zhang is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Grace Shuang Zhang, MD
1140 Sonoma Ave Ste 2a,
Santa Rosa, CA 95405-4817

Ph: (312) 320-0090		Grace Shuang Zhang, MD
1140 Sonoma Ave Ste 2a,
Santa Rosa, CA 95405-4817

Ph: (312) 320-0090

Reviews and Comments


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Dr. Patrick J Caskey, M.D.
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Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

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