Active NPI
Ethan Hill Tittler, M.D.
- Ophthalmology Physician
- Stockton, CA
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Ophthalmology Physician
- License
- A136715
- 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, 2026
- Sex
- Male
- Sole proprietor
- Yes
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| 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
Enrollment records 1
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 100
- Quality
- 100
- Improvement activities
- 40
- Cost
- 73.39
Procedures performed for Medicare patients
| Procedure | Number of procedures |
|---|---|
| Cataract surgery | 209 |
| Melanoma (skin cancer) excision | 1-10 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| A136715 | CA | MD | Ophthalmology Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Central Valley Eye Medical Group Inc. | Ophthalmology | Current | Accepting new patients |
| Sylvan Eye Associates, a Medical Corporation | Ophthalmology | Current | 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. | Past | 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
- 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.
-
- Ophthalmology Physician
- Stockton, CA
- NPI 1609975366
-
- Ophthalmology Physician
- Modesto, CA
- NPI 1740279207
-
- Eyewear Supplier
- Manteca, CA
- NPI 1477675387
-
dba Doctors Hospital of Manteca
- General Acute Care Hospital
- Manteca, CA
- NPI 1992736599
-
- Preferred Provider Organization
- San Ramon, CA
- NPI 1679011035
-
- Children's Hospital
- Palo Alto, CA
- NPI 1467442749
-
- General Acute Care Hospital
- Yonkers, NY
- NPI 1336236629
Hospital & facility affiliations 1
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
dba Doctors Hospital of Manteca
- General Acute Care Hospital
- Manteca, CA
- NPI 1992736599
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
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 28, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.