Hallie Knopf, MD
Hallie Knopf, MD is a Psychiatry Physician in New York, NY, registered under NPI 1003313198.
Getting there
Here is what surrounds this office in New York, based on OpenStreetMap data collected Sep 18, 2026. Parking is available about 0.44 mi away. There is EV charging 0.49 mi from the office (ChargePoint) — useful if you are driving in from out of town. The nearest transit stop is 726 ft away, served by Megabus. A pharmacy sits 680 ft from the entrance (CVS Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 395 ft away.
Getting here and what is nearby
Hotel Fairfield Inn 114 ft ~1 min
Convenience Garden Gourmet Deli & Grocery 155 ft ~1 min
Restaurant McDonald's 171 ft ~1 min
809 6th Avenue, New York 10001
Mo-Su 07:00-23:00
Pharmacy Duane Reade 237 ft ~1 min
777 6th Avenue, 10001
Restaurant Hee Korean BBQ Grill 192 ft ~1 min
793 6th Avenue, New York 10001
Transit 6th Avenue & West 27th Street 270 ft ~2 min
Coffee Luckin Coffee 271 ft ~2 min
800 6th Avenue, New York 10001
EV charging ChargePoint 267 ft ~2 min
Convenience 7-Eleven 266 ft ~2 min
Hotel Holiday Inn Manhattan 260 ft ~1 min
Hotel Moxy NYC Chelsea 263 ft ~1 min
Restaurant Bagel Pub 279 ft ~2 min
Coffee Starbucks 299 ft ~2 min
Coffee IndiCo Coffee Co. 395 ft ~2 min
Transit 6th Avenue & West 29th Street 455 ft ~2 min
Convenience Sunac Fancy Food 463 ft ~2 min
Grocery Fairway Market 542 ft ~3 min
766 6th Avenue, New York 10010
Mo-Su 07:00-21:00
Grocery Ai Fuji 608 ft ~3 min
Pharmacy Walgreens 678 ft ~3 min
319 7th Avenue, 10001
Pharmacy CVS Pharmacy 680 ft ~3 min
750 6th Avenue, 10010
Mo-Fr 09:00-20:00; Sa 10:00-17:00; Su 11:00-16:00 open "Pharmacy" || 07:00-24:00 open "Store"
Transit Megabus 726 ft ~3 min
Grocery Whole Foods Market 0.21 mi ~5 min
250 7th Avenue, New York 10001
Mo-Su 07:00-22:00
Parking 0.25 mi ~5 min
Parking 0.31 mi ~7 min
10 East 30th Street, New York 10016
EV charging Blink 0.39 mi ~8 min
Parking 0.44 mi ~9 min
EV charging ChargePoint 0.49 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
| Licence | State | Specialty |
|---|---|---|
| 306519 | NY | Psychiatry Physician primary |
This provider holds licence 306519 issued in NY. 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 - Psychiatry
- PAC ID
- 4789064890
- Enrollment ID
- I20220712001608
Medicare enrolment is recorded as approved under the provider type Practitioner - Psychiatry. 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 Psychiatry covers
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems. NUCC Health Care Provider Taxonomy, code 2084P0800X
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 | 1003313198 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 6, 2018 |
| Last updated | Jun 6, 2023 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | MD |
| Practice address |
109 W 27TH ST STE 5S New York, NY 10001 (917) 634-5311 |
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 | 3 | 1 | 3 | 1 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 1 | 6 | 1 | 9 |
Sum = 52 · next multiple of 10 = 60 · check digit = 8 · actual last digit = 8
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.