Doctor profile · Federal record

Dr. John Assell, OD

Optometrist (CMS: Optometry) · Denver, NC

  • NPI 1275508152
  • Accepts Medicare
  • 24 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
7547 Waterside Loop RD, Ste A
Denver, NC 28037
(701) 822-9920
fax (704) 822-1764

Credentials & registration

NPPES · NUCC
NPI registered
February 2006 — 20 yrs on file
Profile last updated
December 4, 2019
Year of graduation
2002 — 24 yrs since
Specialty taxonomy
152W00000X — NUCC code
State license (1)
North Carolina #NC1850
Medicaid
NC #891356F

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1275508152. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
533
Distinct HCPCS
8
Medicare allowed
$49,327
HCPCS Description Services Patients Avg allowed
92014 Established patient complete exam of visual system 261 260 $119
99213 Established patient office or other outpatient visit, 20-29 minutes 104 75 $74
92134 Imaging of retina 58 51 $38
92133 Imaging of optic nerve 37 37 $34
66984 Removal of cataract with insertion of prosthetic lens 24 19 $102
92004 New patient complete exam of visual system 24 24 $142
92250 Photography of the retina 13 11 $35
92083 Exam of visual field with extended testing 12 12 $59

In context: peer comparison

Among 3 peers in this city , average services per provider: 87. This provider delivers 6.1× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$244
Transactions
9
Manufacturers
7
Payer (manufacturer) Industry Txns Amount
CooperVision Inc. 2 $61.21
Alcon Vision LLC 2 $59.42
SUN PHARMACEUTICAL INDUSTRIES INC. 1 $35.45
Bausch & Lomb Americas Inc. 1 $24.87
Dompe US, Inc. 1 $22.64
Notal Vision, Inc. 1 $22.24
BIOTISSUE HOLDINGS INC. 1 $17.71

By nature of payment

Food and Beverage
$244

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
188
Patients
80
Total drug cost
$4,138
Drug Type Claims Patients Total cost
Latanoprost Generic 120 43 $3,222
Brimonidine Tartrate Generic 32 14 $402
Neomycin-Polymyxin-Dexameth (Neomycin/Polymyxin B/Dexametha) Brand 24 23 $367
Timolol Maleate Generic 12 0 $147

Frequently asked questions

Auto-generated from federal data
What is Dr. John Assell's medical specialty?
Dr. John Assell practices Optometrist in Denver, NC.
Where does Dr. John Assell practice?
Dr. John Assell practices at 7547 Waterside Loop RD, Denver, NC 28037. Office phone: 7018229920.
What is Dr. John Assell's NPI?
Dr. John Assell's National Provider Identifier (NPI) is 1275508152, issued by NPPES.
Does Dr. John Assell accept Medicare assignment?
Yes. Dr. John Assell accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Assell commonly perform?
Top Medicare-reported procedures in 2023: Established patient complete exam of visual system (HCPCS 92014); Established patient office or other outpatient visit (HCPCS 99213); Imaging of retina (HCPCS 92134). Source: CMS Medicare Physician & Other Practitioners file.