Registry data as of Aug 27, 2026

Ethan Tittler, M.D.

Ophthalmology Physician · Stockton, CA

Ethan Tittler, M.D. is an ophthalmology physician with a practice address in Stockton, California, and NPI 1649562406, issued on May 11, 2011. Check the license (California A136715, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1649562406
Name
Ethan Tittler
Credential
M.D.
Primary taxonomy
Ophthalmology Physician 207W00000X
License number
A136715 CA
Self-reported in NPPES; status is on the state search
Practice location
36 W Yokuts Ave Ste 1, Stockton, CA 95207
Phone
(209) 952-3700
Enumerated
May 11, 2011
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 36 W Yokuts Ave Ste 1

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Crystal Chen, O.D.Optometrist1588841365
  2. Angela Maharaj-Gill, O.D.Optometrist1780099903
  3. Sina Vahedi, M.D.Glaucoma Specialist (Ophthalmology) Physician1679005219

Verify Ethan Tittler in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A136715
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Statewide context: the Medical Board of California reported 374 disciplinary actions in FY 2022-23. California discipline data →

24% fewer Medicare Part D claims than the average ophthalmology physician in 2024

1,160 Medicare Part D claims for 758 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 50% of claims.

  1. Ethan Tittler1,160
  2. Specialty average1,518

Most prescribed

  1. Neomycin-Polymyxin-Dexameth505 claims
  2. Erythromycin213 claims
  3. Prednisolone Acetate142 claims
  4. Ketorolac Tromethamine109 claims
  5. Latanoprost25 claims
  6. Restasis18 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

The practice group's Medicare quality score for 2023: 60 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score53.6
  2. Costout of 100 · 30%17.4
  3. Promoting interoperabilityout of 100 · 25%86.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $625.41

10 payments, mostly food and beverage; the largest payer was RxSight Inc. The 13,221 providers of this specialty with any payment received $4,535.02 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Ethan Tittler$625.41
  2. Specialty average$4,535.02

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Central Valley Eye Medical Group IncStockton, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Ophthalmology Physician providers in California

There are 2,899 ophthalmology physician records in California.

Other ophthalmology physician records in California

  1. Sam Abbassi, MD, MSWest Hills, CA1881937720
  2. Richard Abbott, M.D.San Francisco, CA1346276573
  3. Jean-Paul Abboud, M.D., PH.D.Del Mar, CA1760776728
  4. Nizar Abdelfattah, MDPasadena, CA1801359393
  5. Parastou Abedi, MDAliso Viejo, CA1720067333
  6. Shahla Abedi, MDAliso Viejo, CA1467431072
  7. Lilit Ablabutyan, M.D.Glendale, CA1497013064
  8. Nathan Abraham, M.D.Valencia, CA1306224456
  9. James Abrams, M.D.San Bruno, CA1912903329
  10. Adam Abroms, MDWestlake Village, CA1497743702

Common questions

What is Ethan Tittler, M.D.'s NPI number?

Ethan Tittler, M.D.'s National Provider Identifier (NPI) is 1649562406, issued on May 11, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Ethan Tittler, M.D. located?

The NPPES record lists a practice address at 36 W Yokuts Ave Ste 1, Stockton, CA, 95207. Phone: (209) 952-3700. Providers update this record themselves, so call before visiting.

How can I verify Ethan Tittler, M.D.'s license?

NPPES lists California license number A136715, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Ethan Tittler, M.D. prescribe under Medicare Part D?

In 2024, Ethan Tittler, M.D. had 1,160 Medicare Part D claims for 758 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.

What is Ethan Tittler, M.D.'s Medicare quality score?

The 2023 MIPS final score is 60 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments, the HHS-OIG exclusion list) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.