Eloisa Morfin, OD
Eloisa Morfin, OD is a provider specialising in Optometrist in Mill Valley, CA, registered under NPI 1003657545. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in Mill Valley, based on OpenStreetMap data collected Oct 12, 2026. Parking is available about 213 ft away. The nearest transit stop is 0.28 mi away, served by East Blithedale Avenue & Hill Street. A pharmacy sits 703 ft from the entrance (Physical Medicine Center of Marin), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 470 ft away.
Getting here and what is nearby
Parking 78 ft ~1 min
Hotel Mill Valley Inn 100 ft ~1 min
Restaurant Avatar's Punjabi Burritos 106 ft ~1 min
15 Madrona Street, Mill Valley 94941
Parking 178 ft ~1 min
Parking 213 ft ~1 min
Coffee Equator Coffee Mill Valley 268 ft ~2 min
Restaurant Piazza D'Angelo 362 ft ~2 min
22 Miller Avenue
Mo-Th, Su 11:30-20:30; Fr, Sa 11:30-21:00
Coffee Depot Bookstore and Cafe 436 ft ~2 min
87 Throckmorton Avenue
Coffee Peet's Coffee 470 ft ~2 min
88 Throckmorton Avenue, Mill Valley 94941
Restaurant Gravity Tavern 497 ft ~2 min
38 Miller Avenue, Mill Valley 94941
Transit Sunnyside Avenue & Miller Avenue 553 ft ~3 min
Transit Miller Avenue & Sunnyside Avenue 575 ft ~3 min
Pharmacy Physical Medicine Center of Marin 703 ft ~3 min
Grocery Mill Valley Market 720 ft ~3 min
Transit East Blithedale Avenue & Hill Street 0.28 mi ~6 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 35742 | CA | Optometrist primary |
This provider holds licence 35742 issued in CA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Optometrist covers
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system. NUCC Health Care Provider Taxonomy, code 152W00000X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003657545 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 6, 2024 |
| Last updated | Jun 6, 2024 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | OD |
| Practice address |
158 THROCKMORTON AVE Mill Valley, CA 94941 (415) 388-8262 |
| Mailing address |
1963 WILL O VIEW CIR Lakeport, CA 95453 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 6 | 5 | 7 | 5 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 3 | 5 | 5 | 5 | 8 |
Sum = 55 · next multiple of 10 = 60 · check digit = 5 · actual last digit = 5
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.