On-tat Lee, MD - Medicare Ophthalmology in Stockton, CA

On-tat Lee, MD is a medicare enrolled "Ophthalmology" physician in Stockton, California. He went to University Of California, Davis School Of Medicine and graduated in 2014 and has 10 years of diverse experience with area of expertise as Ophthalmology. He is a member of the group practice Delta Eye Medical Group, Inc. and his current practice location is 1617 Saint Marks Plz Ste D, Stockton, California. You can reach out to his office (for appointments etc.) via phone at (209) 478-1797.

On-tat Lee is licensed to practice in California (license number A138659) 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 1194084517.

Contact Information

On-tat Lee, MD
1617 Saint Marks Plz Ste D,
Stockton, CA 95207-6478
(209) 478-1797
(209) 478-1224

Map and Direction




Physician's Profile

Full NameOn-tat Lee
GenderMale
SpecialityOphthalmology
Experience10 Years
Location1617 Saint Marks Plz Ste D, Stockton, 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:
  • On-tat Lee attended and graduated from University Of California, Davis School Of Medicine in 2014
  NPI Data:
  • NPI Number: 1194084517
  • Provider Enumeration Date: 05/04/2012
  • Last Update Date: 07/14/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 6305278623
  • Enrollment ID: I20191107000676

Medical Identifiers

Medical identifiers for On-tat Lee such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1194084517NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207W00000XOphthalmology A138659 (California)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Delta Eye Medical Group, Inc.62048738707

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. On-tat Lee allows following entities to bill medicare on his behalf.
Entity NameDelta Eye Medical Group, Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1184812851
PECOS PAC ID: 6204873870
Enrollment ID: O20050414000825

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. On-tat Lee 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
On-tat Lee, MD
1617 Saint Marks Plz Ste D,
Stockton, CA 95207-6478

Ph: (209) 478-1797
On-tat Lee, MD
1617 Saint Marks Plz Ste D,
Stockton, CA 95207-6478

Ph: (209) 478-1797

Reviews and Comments


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Practice Location: 36 West Yokuts Ave, Ste 1, Stockton, CA 95207
Phone: 209-952-3700    Fax: 209-478-3302

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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