David Lanham
David Lanham is an Addiction (Substance Use Disorder) Counselor in San Francisco, CA, registered under NPI 1003014309.
Getting there
Here is what surrounds this office in San Francisco, based on OpenStreetMap data collected Aug 29, 2026. Parking is available about 0.35 mi away. There is EV charging 0.45 mi from the office (EVgo) — useful if you are driving in from out of town. The nearest transit stop is 904 ft away, served by Mission Street & 7th Street. If you arrive early, there is a coffee shop 770 ft away.
Getting here and what is nearby
Grocery Harvest Urban Market 274 ft ~2 min
Hotel Inn on Folsom 482 ft ~2 min
Restaurant Bay of Burma 480 ft ~2 min
Hotel City Center Inn & Suites 548 ft ~3 min
Restaurant Chaat Diner 533 ft ~3 min
1140 Folsom Street
Mo-Fr 11:00-24:00; Sa,Su 00:00-01:00,11:00-24:00
Restaurant Anton's Falafel House 544 ft ~3 min
Convenience Welcome Supermarket 641 ft ~3 min
1141 Folsom Street
Coffee Nosh Box 666 ft ~3 min
Coffee Sightglass Coffee 670 ft ~3 min
270 7th Street, San Francisco 94103
Mo-Fr 06:30-17:00; Sa-Su 07:00-17:00
Convenience Tony Baloney's Market 683 ft ~3 min
Hotel Carriage Inn 692 ft ~3 min
140 7th Street, San Francisco 94103
Transit Mission Street & 8th Street 726 ft ~3 min
Coffee café suspiro 770 ft ~3 min
Transit Mission Street & 8th Street 847 ft ~4 min
Transit Mission Street & 7th Street 904 ft ~4 min
Parking 940 ft ~4 min
Mo-Su 05:30-23:30
Convenience Diana Market #2 0.20 mi ~5 min
282 9th Street
Gas station Shell 0.25 mi ~6 min
Parking 7th St./Harrison Lot 0.30 mi ~7 min
415 7th Street, San Francisco
Mo-Su 07:00-19:00; PH off
EV charging 0.31 mi ~7 min
1401 Folsom Street
Gas station Chevron 0.33 mi ~7 min
EV charging EVgo 0.35 mi ~8 min
Parking 0.35 mi ~7 min
closed
Grocery Trader Joe's 0.42 mi ~9 min
EV charging EVgo 0.45 mi ~10 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
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 Addiction (Substance Use Disorder) covers
Definition to come... NUCC Health Care Provider Taxonomy, code 101YA0400X
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 | 1003014309 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 7, 2007 |
| Last updated | Jul 8, 2007 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Practice address |
1175 HOWARD ST San Francisco, CA 94103 (415) 864-3057 |
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 | 1 | 4 | 3 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 1 | 8 | 3 | 0 |
Sum = 41 · next multiple of 10 = 50 · check digit = 9 · actual last digit = 9
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.