Individual provider Active NPI

Ethan Hill Tittler, M.D.

  • Ophthalmology Physician
  • Stockton, CA
National Provider Identifier
1649562406
Registry record updated Sep 28, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Ophthalmology PhysicianTaxonomy code 207W00000X
License
A136715 Issued in CA
Practice address
36 W Yokuts Ave Ste 1
Stockton, CA 95207-5713
Phone
(209) 952-3700
Fax
(209) 952-0553
NPI assigned
May 11, 2011
Last updated
Sep 28, 2026By the provider in NPPES
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Sep 28, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Ophthalmology Physician 207W00000X A136715 CA Primary

Addresses

Primary practice location

36 W Yokuts Ave Ste 1
Stockton, CA 95207-5713

Mailing address

36 W Yokuts Ave Ste 1
Stockton, CA 95207-5713
Phone (209) 952-3700

Other practice location 1

200 Cottage Ave Ste 102
Manteca, CA 95336-4935
Phone (209) 239-5303

Other practice location 2

1334 Nelson Ave
Modesto, CA 95350-5341
Phone (209) 579-8800

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20150825005719 CA Practitioner - Ophthalmology 6800102591 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Ophthalmology
Education
Other, 2011
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices

Practice addresses (Care Compare)

36 W Yokuts Ave
Suite 1
Stockton, CA 95207-5713
Phone (209) 952-3700

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
94.48 of 100Reported as group
Quality
100
Improvement activities
40
Cost
73.39

Procedures performed for Medicare patients

ProcedureNumber of procedures
Cataract surgery209
Melanoma (skin cancer) excision1-10

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
A136715CAMDOphthalmology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Central Valley Eye Medical Group Inc. Ophthalmology CurrentSince Jul 1, 2016 Accepting new patients
Sylvan Eye Associates, a Medical Corporation Ophthalmology CurrentSince Jul 15, 2018 Accepting new patients
St. Joseph's Hospital, Yonkers Past Accepting new patients
Lucile Salter Packard Children's Hospital at Stanford Past Accepting new patients
Central Valley Eye Medical Group Inc. PastSince Jul 1, 2016 Accepting new patients
Hill Physicians Medical Group - PPO Program Past Accepting new patients
Doctors Hospital of Manteca, Inc. Past Accepting new patients

Locations

200 Cottage Ave
Ste 102
Manteca, CA 95336
Phone (209) 239-5303

1011 Sylvan Ave
Ste A
Modesto, CA 95350
Phone (209) 575-2020

1334 Nelson Ave
Modesto, CA 95350
Phone (209) 524-9904

36 W Yokuts Ave
Ste 1
Stockton, CA 95207
Phone (209) 952-3700

1199 Delbon Ave
Ste 4
Turlock, CA 95382
Phone (209) 667-6211

Networks

  • BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

  • Direct secure messaging: etittler15567@hpmg.direct-ci.net

Organizations & group practices 7

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 1

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1305072000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1790553600000",
    "number": "1649562406",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "36 W YOKUTS AVE STE 1",
            "city": "STOCKTON",
            "state": "CA",
            "postal_code": "952075713",
            "telephone_number": "209-952-3700",
            "fax_number": "209-952-0553"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "36 W YOKUTS AVE STE 1",
            "city": "STOCKTON",
            "state": "CA",
            "postal_code": "952075713",
            "telephone_number": "209-952-3700",
            "fax_number": "209-952-0553"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "200 Cottage Ave Ste 102",
            "address_purpose": "LOCATION",
            "city": "Manteca",
            "state": "CA",
            "postal_code": "953364935",
            "country_code": "US",
            "telephone_number": "209-239-5303",
            "fax_number": "209-239-0090",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1334 Nelson Ave",
            "address_purpose": "LOCATION",
            "city": "Modesto",
            "state": "CA",
            "postal_code": "953505341",
            "country_code": "US",
            "telephone_number": "209-579-8800",
            "fax_number": "209-579-1407",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "TITTLER",
        "first_name": "ETHAN",
        "middle_name": "HILL",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2011-05-11",
        "last_updated": "2026-09-28",
        "certification_date": "2026-09-28",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207W00000X",
            "taxonomy_group": "",
            "desc": "Ophthalmology",
            "state": "CA",
            "license": "A136715",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Stockton, CA

Sources for this page

Verify at the official NPI Registry.