David Tim Lewis, PSY.D.
David Tim Lewis, PSY.D. is a Clinical Psychologist in San Francisco, CA, registered under NPI 1003046970. 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 San Francisco, based on OpenStreetMap data collected Sep 2, 2026. Parking is available about 998 ft away at SFMOMA Garage. The nearest transit stop is 0.33 mi away, served by Salesforce Transit Center Bay 9. A pharmacy sits 0.32 mi from the entrance (Walgreens), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 275 ft away.
Getting here and what is nearby
Coffee Blue Bottle Coffee 106 ft ~1 min
Restaurant Oasis Grill 158 ft ~1 min
Coffee Junbi 226 ft ~1 min
Mo-Fr 07:00-14:00; Sa-Su off
Restaurant Super Duper Burgers 233 ft ~1 min
Coffee Asha Tea House 275 ft ~2 min
17 Kearny Street, San Francisco 94108
Mo-Fr 10:00-18:30; Sa 10:30-18:30; Su off
Restaurant Poke Bowl 304 ft ~2 min
33 Kearny Street, San Francisco
Hotel Hyatt Regency San Francisco Downtown SOMA 347 ft ~2 min
Hotel Four Seasons 493 ft ~2 min
Hotel Galleria Park Hotel 787 ft ~3 min
191 Sutter Street, San Francisco 94104
Parking Palace Garage 778 ft ~3 min
111;125;127 Stevenson Street
Parking The White House Garage 848 ft ~4 min
Convenience Bay Food Mini Market 962 ft ~4 min
578 Market Street
Grocery Trader Joe's 962 ft ~4 min
Parking SFMOMA Garage 998 ft ~4 min
Convenience Grant Mini Market 0.24 mi ~5 min
517 Bush Street
Pharmacy Four-Fifty Sutter Pharmacy 0.27 mi ~6 min
Convenience Food Fair Market Liquors 0.29 mi ~6 min
Transit Salesforce Transit Center Bay 5 0.31 mi ~7 min
Pharmacy Walgreens 0.31 mi ~7 min
Transit Salesforce Transit Center Bay 7 0.32 mi ~7 min
Pharmacy Walgreens 0.32 mi ~7 min
300 Montgomery Street, San Francisco 94104
Mo-Fr 09:00-13:30,14:00-19:00
Transit Salesforce Transit Center Bay 9 0.33 mi ~7 min
Grocery Chaat Corner Indian Grocery 0.37 mi ~8 min
Grocery Whole Foods Market 0.48 mi ~10 min
399 4th Street, San Francisco 94107
Mo-Su 08:00-22:00
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 |
|---|---|---|
| 24514 | CA | Clinical Psychologist primary |
This provider holds licence 24514 issued in CA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Clinical Psychologist
- PAC ID
- 9335385582
- Enrollment ID
- I20240514003771
Medicare enrolment is recorded as approved under the provider type Practitioner - Clinical Psychologist. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Clinical covers
A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems. NUCC Health Care Provider Taxonomy, code 103TC0700X
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 | 1003046970 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 24, 2009 |
| Last updated | Jun 3, 2013 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | PSY.D. |
| Practice address |
703 MARKET ST STE 1208 San Francisco, CA 94103 (415) 350-9611 |
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 | 0 | 4 | 6 | 9 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 4 | 3 | 9 | 5 |
Sum = 50 · next multiple of 10 = 50 · check digit = 0 · actual last digit = 0
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.