Doctor profile · Federal record

Dr. Darby Day

Psychiatric/Mental Health Nurse Practitioner · Philadelphia, PA

  • NPI 1174275457
  • 4 yrs on file
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
2600 N American St
Philadelphia, PA 191333413
(215) 739-2669

Credentials & registration

NPPES · NUCC
NPI registered
January 2022 — 4 yrs on file
Profile last updated
August 25, 2022
Specialty taxonomy
363LP0808X — NUCC code
State license (1)
Pennsylvania #SP024966

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1174275457. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
408
Distinct HCPCS
2
Medicare allowed
$39,713
HCPCS Description Services Patients Avg allowed
90837 Psychotherapy, 1 hour 287 117 $113
99213 Established patient office or other outpatient visit, 20-29 minutes 121 41 $61

In context: peer comparison

Among 25 peers in Philadelphia Psychiatric/Mental Health Nurse Practitioner, average services per provider: 158. This provider delivers 2.6× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$918
Transactions
41
Manufacturers
11
Payer (manufacturer) Industry Txns Amount
Janssen Pharmaceuticals, INC 6 $206.42
Teva Pharmaceuticals USA, INC. 6 $124.31
Otsuka America Pharmaceutical, INC. 4 $98.78
Abbvie INC. 5 $93.47
Lundbeck LLC 5 $92.30
Indivior INC. 4 $81.84
Iti, INC. (D/B/A Intra-Cellular Therapies, INC.) 4 $71.47
Alkermes, INC. 3 $54.86
Almatica Pharma LLC 2 $46.02
Tempus Ai, INC 1 $24.41
Neurocrine Biosciences, INC. 1 $23.80

By nature of payment

Food and Beverage
$918

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
4,742
Patients
521
Total drug cost
$130,926
Drug Type Claims Patients Total cost
Mirtazapine Generic 502 53 $10,802
Zolpidem Tartrate Generic 497 49 $2,272
Trazodone Hcl Generic 489 61 $2,737
Quetiapine Fumarate Generic 430 47 $3,605
Alprazolam Generic 360 31 $1,190
Clonazepam Generic 318 32 $899
Escitalopram Oxalate Generic 306 34 $1,994
Sertraline Hcl Generic 305 34 $1,812
Buspirone Hcl Generic 292 37 $7,930
Bupropion Xl (Bupropion Hcl) Brand 262 29 $4,014

Frequently asked questions

Auto-generated from federal data
What is Dr. Darby Day's medical specialty?
Dr. Darby Day practices Psychiatric/Mental Health Nurse Practitioner in Philadelphia, PA.
Where does Dr. Darby Day practice?
Dr. Darby Day practices at 2600 N American St, Philadelphia, PA 191333413. Office phone: 2157392669.
What is Dr. Darby Day's NPI?
Dr. Darby Day's National Provider Identifier (NPI) is 1174275457, issued by NPPES.
What procedures does Dr. Darby Day commonly perform?
Top Medicare-reported procedures in 2023: Psychotherapy (HCPCS 90837); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.