Doctor profile · Federal record

Dr. Diana Farrell-Grossman, D.O.

Internal Medicine Physician (CMS: Internal Medicine) · Internal Medicine Physician · Bethlehem, PA

  • NPI 1821359688
  • Accepts Medicare
  • 17 yrs in practice
  • Licensed in 2 states
  • Female
  • Solo practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
325 W Broad St
Bethlehem, PA 18018
(484) 626-9200
fax (610) 867-8499
Additional location
21097 Ne 27Th CT, Suite 110
Aventura, FL 331801204
(305) 682-8809
fax (305) 682-8806
Mailing address
Po Box 783311
Philadelphia, PA 191783311

Credentials & registration

NPPES · NUCC
NPI registered
June 2012 — 14 yrs on file
Profile last updated
April 4, 2019
Year of graduation
2009 — 17 yrs since
Specialty taxonomy
207R00000X — NUCC code
State licenses (2)
Pennsylvania #OS019836 · Florida #OS11692

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1821359688. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
341
Distinct HCPCS
10
Medicare allowed
$32,239
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 83 59 $123
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit 62 62 $121
G0008 Administration of influenza virus vaccine 46 46 $29
90662 Influenza vaccine split virus, preservative free 37 37 $72
99442 Telephone medical discussion with physician, 11-20 minutes 31 27 $85
90480 Admn sarscov2 vacc 1 dose 22 22 $39
91320 Sarscv2 vac 30mcg trs-suc im 22 22 $128
99443 Telephone medical discussion with physician, 21-30 minutes 14 13 $123
83036 Hemoglobin a1c level 12 11 $10
99495 Transitional care management services for problem of at least moderate complexity 12 12 $197

In context: peer comparison

Among 61 peers in Bethlehem Internal Medicine Physician, average services per provider: 122. This provider delivers 2.8× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$104
Transactions
1
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
Myriad Genetic Laboratories, INC. 1 $104.12

By nature of payment

Food and Beverage
$104

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
1,086
Patients
375
Total drug cost
$24,627
Drug Type Claims Patients Total cost
Levothyroxine Sodium Generic 124 40 $1,930
Rosuvastatin Calcium Generic 119 37 $5,476
Lisinopril Generic 115 37 $1,234
Amlodipine Besylate Generic 100 43 $962
Atorvastatin Calcium Generic 92 36 $2,415
Omeprazole Generic 77 28 $1,370
Simvastatin Generic 74 26 $973
Albuterol Sulfate Hfa (Albuterol Sulfate) Brand 66 24 $2,733
Metformin Hcl Generic 55 20 $795
Escitalopram Oxalate Generic 47 13 $1,256

Frequently asked questions

Auto-generated from federal data
What is Dr. Diana Farrell-Grossman's medical specialty?
Dr. Diana Farrell-Grossman practices Internal Medicine Physician in Bethlehem, PA.
Where does Dr. Diana Farrell-Grossman practice?
Dr. Diana Farrell-Grossman practices at 325 W Broad St, Bethlehem, PA 18018. Office phone: 4846269200.
What is Dr. Diana Farrell-Grossman's NPI?
Dr. Diana Farrell-Grossman's National Provider Identifier (NPI) is 1821359688, issued by NPPES.
Does Dr. Diana Farrell-Grossman accept Medicare assignment?
Yes. Dr. Diana Farrell-Grossman accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Diana Farrell-Grossman commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439); Administration of influenza virus vaccine (HCPCS G0008). Source: CMS Medicare Physician & Other Practitioners file.