Active NPI
Frank Paul Castaldi, DO
- Optometrist
- Stamford, CT
National Provider Identifier
1043396302
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Optometrist
- License
- 1074
- Practice address
- 1351 Washington Blvd Ste 601a
Stamford, CT 06902-2450 - Phone
- (203) 324-1606
- Fax
- (203) 324-4357
- NPI assigned
- Oct 30, 2006
- 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 |
|---|---|---|---|---|
| Optometrist | 152W00000X | 1074 | CT | Primary |
Addresses
Primary practice location
1351 Washington Blvd Ste 601a
Stamford, CT 06902-2450
Mailing address
1351 Washington Blvd Ste 601a
Stamford, CT 06902-2450
Phone (203) 324-1606
Other identifiers 3
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 090001074CT01 | Other | CT | ANTHEM |
| 004068409 | Medicaid | CT | |
| 7359876831 | Other | CT | CONNECTICARE |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in CT
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: No
- Hospice: Yes
Enrollment records 1
| Enrollment ID | State | Provider type | PAC ID | Details |
|---|---|---|---|---|
| I20110712000661 | CT | Practitioner - Optometry | 3870761109 | Practice locations: Stamford, CT |
Care Compare profile
Medicare Care Compare- Specialty
- Optometry
- Education
- Pennsylvania College of Optometry, 1984
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
Practice addresses (Care Compare)
1 Bank St
Stamford, CT 06901-3006
1 Bank St Ground Level
Stamford, CT 06901-3006
Phone (203) 324-1606
Merit-based Incentive Payment System (MIPS)
- Final score
- 100 of 100
- Quality
- 100
- Improvement activities
- 40
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Osteopathy
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 1074 | CT | MD | Behavioral Analyst |
| 001074 | CT | MD | Physical Therapy Assistant |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Vision Consultants | Optometrist | Past | Accepting new patients |
Organizations & group practices 1
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.
-
- Optometrist
- Stamford, CT
- NPI 1568683803
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1162166400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1786752000000",
"number": "1043396302",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1351 WASHINGTON BLVD STE 601A",
"city": "STAMFORD",
"state": "CT",
"postal_code": "069022450",
"telephone_number": "203-324-1606",
"fax_number": "203-324-4357"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1351 WASHINGTON BLVD STE 601A",
"city": "STAMFORD",
"state": "CT",
"postal_code": "069022450",
"telephone_number": "203-324-1606",
"fax_number": "203-324-4357"
}
],
"practiceLocations": [],
"basic": {
"last_name": "CASTALDI",
"first_name": "FRANK",
"middle_name": "PAUL",
"name_prefix": "Dr.",
"credential": "DO",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2006-10-30",
"last_updated": "2026-08-15",
"certification_date": "2026-08-15",
"status": "A"
},
"taxonomies": [
{
"code": "152W00000X",
"taxonomy_group": "",
"desc": "Optometrist",
"state": "CT",
"license": "1074",
"primary": true
}
],
"identifiers": [
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "ANTHEM",
"identifier": "090001074CT01",
"state": "CT"
},
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "004068409",
"state": "CT"
},
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "CONNECTICARE",
"identifier": "7359876831",
"state": "CT"
}
],
"endpoints": [],
"other_names": []
}
Other providers in Stamford, CT
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 15, 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.