Doctor profile · Federal record

Dr. Christopher Grainger, M.D.

Geriatric Medicine (Family Medicine) Physician (CMS: Family Practice) · Ocala, FL

  • NPI 1255398798
  • Accepts Medicare
  • 50 yrs in practice
  • Male
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
4600 Sw 46Th CT, Suite 310
Ocala, FL 344745752
(352) 351-0463
fax (352) 620-8639

Credentials & registration

NPPES · NUCC
NPI registered
April 2006 — 20 yrs on file
Profile last updated
December 22, 2009
Year of graduation
1976 — 50 yrs since
Specialty taxonomy
207QG0300X — NUCC code
State license (1)
Florida #ME 0038592
Medicaid
FL #065707700

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1255398798. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
636
Distinct HCPCS
4
Medicare allowed
$70,700
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 288 153 $125
99213 Established patient office or other outpatient visit, 20-29 minutes 187 111 $89
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit 143 143 $126
81003 Automated urinalysis test 18 17 $2

In context: peer comparison

Among 1 peers in this city , average services per provider: 159. This provider delivers 4.0× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$184
Transactions
9
Manufacturers
5
Payer (manufacturer) Industry Txns Amount
GlaxoSmithKline, LLC. 5 $107.94
Exact Sciences Corporation 1 $28.72
Amgen Inc. 1 $19.16
PFIZER INC. 1 $14.45
Philips North America LLC 1 $13.79

By nature of payment

Food and Beverage
$184

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
5,168
Patients
1,514
Total drug cost
$56,683
Drug Type Claims Patients Total cost
Atorvastatin Calcium Generic 786 230 $9,626
Lisinopril Generic 623 177 $3,968
Amlodipine Besylate Generic 476 139 $2,615
Metformin Hcl Generic 421 129 $3,063
Omeprazole Generic 380 110 $5,219
Losartan Potassium Generic 343 93 $5,851
Metoprolol Tartrate Generic 310 93 $2,584
Simvastatin Generic 292 80 $2,457
Levothyroxine Sodium Generic 281 90 $6,641
Gabapentin Generic 249 82 $6,838

Frequently asked questions

Auto-generated from federal data
What is Dr. Christopher Grainger's medical specialty?
Dr. Christopher Grainger practices Geriatric Medicine (Family Medicine) Physician in Ocala, FL.
Where does Dr. Christopher Grainger practice?
Dr. Christopher Grainger practices at 4600 Sw 46Th CT, Ocala, FL 344745752. Office phone: 3523510463.
What is Dr. Christopher Grainger's NPI?
Dr. Christopher Grainger's National Provider Identifier (NPI) is 1255398798, issued by NPPES.
Does Dr. Christopher Grainger accept Medicare assignment?
Yes. Dr. Christopher Grainger accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Christopher Grainger commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439). Source: CMS Medicare Physician & Other Practitioners file.