Crystal Singletary
Crystal Singletary is a Specialist in Brooklyn, NY, registered under NPI 1003209370.
Getting there
Here is what surrounds this office in Brooklyn, based on OpenStreetMap data collected Sep 11, 2026. Parking is available about 0.31 mi away. The nearest transit stop is 737 ft away, served by Ralph Avenue & Chauncey Street. A pharmacy sits 0.46 mi from the entrance (Top Care Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.35 mi away.
Getting here and what is nearby
Transit Ralph Avenue & Bainbridge Street 523 ft ~2 min
Transit Ralph Avenue & Decatur Street 568 ft ~3 min
Parking 673 ft ~3 min
Transit Ralph Avenue & Chauncey Street 737 ft ~3 min
Restaurant Greedi Kitchen 839 ft ~4 min
180 Ralph Avenue, Brooklyn 11233
Tu-Th 12:00-21:00; Fr 12:00-22:00; Sa-Su 10:00-19:00
Convenience Two Ways Supermarket 960 ft ~4 min
Restaurant Zam Zam Halal 938 ft ~4 min
102 Saratoga Avenue
Restaurant Olmo 1,022 ft ~4 min
Coffee September 0.21 mi ~5 min
83 Saratoga Avenue
Sa, Su 09:00-17:00; Mo-Fr 07:00-16:00
Pharmacy Sure Drugs 0.27 mi ~6 min
Pharmacy Rite Aid 0.28 mi ~6 min
Convenience Organic Time 0.29 mi ~6 min
320 Ralph Avenue, 11233
Parking 0.29 mi ~6 min
Grocery Associated Supermarket 0.29 mi ~6 min
Coffee Early Yves 0.31 mi ~7 min
Convenience Kelvin Food Market 0.31 mi ~7 min
1874 Fulton Street, 11233
Parking 0.31 mi ~7 min
Grocery Green Harmony Market 0.32 mi ~7 min
104 Ralph Avenue
Coffee Familiars Vegan Coffee Shop 0.35 mi ~7 min
Grocery Key Food 0.37 mi ~8 min
1533 Broadway, Brooklyn 11221
Mo-Sa 08:00-21:00; Su 08:00-20:00
Hotel Marina Hotel 0.39 mi ~8 min
1494 Broadway
Gas station Sunoco 0.40 mi ~8 min
Pharmacy Top Care Pharmacy 0.46 mi ~10 min
380 Ralph Avenue
Gas station Speedy Gas 0.51 mi ~11 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 Specialist covers
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree. NUCC Health Care Provider Taxonomy, code 174400000X
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 | 1003209370 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 11, 2015 |
| Last updated | Mar 11, 2015 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Practice address |
405 BAINBRIDGE ST Brooklyn, NY 11233 (917) 436-7990 |
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 | 2 | 0 | 9 | 3 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 0 | 9 | 3 | 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.