Theodore Leng, MD - Medicare Ophthalmology in Stanford, CA

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Theodore Leng, MD is a medicare enrolled "Ophthalmology - Retina Specialist" physician in Stanford, California. He went to Stanford University School Of Medicine and graduated in 2005 and has 19 years of diverse experience with area of expertise as Ophthalmology. He is a member of the group practice County Of Santa Clara, University Healthcare Alliance, Stanford Health Care and his current practice location is 300 Pasteur Dr, Stanford, California. You can reach out to his office (for appointments etc.) via phone at (650) 723-4000.

Theodore Leng is licensed to practice in California (license number A106892) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1144438987.

Contact Information

Theodore Leng, MD
300 Pasteur Dr,
Stanford, CA 94305-2200
(650) 723-4000
Not Available

Map and Direction




Physician's Profile

Full NameTheodore Leng
GenderMale
SpecialityOphthalmology
Experience19 Years
Location300 Pasteur Dr, Stanford, California
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Theodore Leng attended and graduated from Stanford University School Of Medicine in 2005
  NPI Data:
  • NPI Number: 1144438987
  • Provider Enumeration Date: 05/17/2007
  • Last Update Date: 03/21/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 3375693195
  • Enrollment ID: I20090616000573

Medical Identifiers

Medical identifiers for Theodore Leng such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1144438987NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207W00000XOphthalmology A106892 (California)Secondary
207WX0107XOphthalmology - Retina Specialist A106892 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Stanford Health CareStanford, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
County Of Santa Clara1254244973722
University Healthcare Alliance6305748799341
Stanford Health Care67097974912579

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. Theodore Leng allows following entities to bill medicare on his behalf.
Entity NameStanford Health Care
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1437292927
PECOS PAC ID: 6709797491
Enrollment ID: O20031124000348
Entity NameCounty Of Santa Clara
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1659450955
PECOS PAC ID: 1254244973
Enrollment ID: O20040113000757
Entity NameCounty Of Santa Clara
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1699885079
PECOS PAC ID: 1254244973
Enrollment ID: O20040113000784
Entity NameUniversity Healthcare Alliance
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1760531198
PECOS PAC ID: 6305748799
Enrollment ID: O20040126000292
Entity NameLpch Medical Group Div Of Lucile
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1417907940
PECOS PAC ID: 0840298543
Enrollment ID: O20061113000232
Entity NameCounty Of Santa Clara
Entity TypePart B Supplier - Other Medical Care Group
Entity IdentifiersNPI Number: 1629301346
PECOS PAC ID: 1254244973
Enrollment ID: O20110318000170

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. Theodore Leng 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
Theodore Leng, MD
2452 Watson Ct,
Palo Alto, CA 94303-3216

Ph: (650) 721-6888		Theodore Leng, MD
300 Pasteur Dr,
Stanford, CA 94305-2200

Ph: (650) 723-4000

Reviews and Comments


Ophthalmology Doctors in Stanford, CA

Stephen John Smith, MD
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Dr. Clara Jiayun Men, MD
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Dr. Angeline Michelle Nguyen, MD
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Sean Michael Collon, MD
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Charles Qian Yu, MD
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Practice Location: 300 Pasteur Dr, Stanford, CA 94305
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Bryce Chiang, MD
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Practice Location: 300 Pasteur Dr, Stanford, CA 94305
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Karen Michelle Phan Wai, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 300 Pasteur Dr, Stanford, CA 94305
Phone: 650-723-4000    

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).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.