Doctor profile · Federal record
Dr. David Giammar, M.D.
Colon & Rectal Surgery Physician (CMS: Colorectal Surgery (Proctology)) · Colon & Rectal Surgery Physician · Westerville, OH
- NPI 1154307858
- Accepts Medicare
- MIPS 79.3 / 100 · 2023
- 30 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
477 Cooper RD Ste 440
Westerville, OH 430818055
(380) 898-5561
fax (380) 898-5563
Credentials & registration
- NPI registered
- December 2005 — 21 yrs on file
- Profile last updated
- January 17, 2025
- Year of graduation
- 1996 — 30 yrs since
- Specialty taxonomy
- 208C00000X — NUCC code
- State licenses (2)
- Ohio #35.077358 · Michigan #4301102844
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1154307858. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
466
Distinct HCPCS
10
Medicare allowed
$44,920
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 93 | 58 | $50 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 89 | 44 | $86 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 86 | 62 | $77 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 49 | 48 | $130 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 36 | 35 | $171 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 26 | 26 | $107 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 26 | 20 | $122 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 23 | 23 | $106 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 19 | 19 | $187 | |
99442 |
Telephone medical discussion with physician, 11-20 minutes | 19 | 14 | $86 |
In context: peer comparison
Among 1 peers in Westerville Colon & Rectal Surgery Physician, average services per provider: 46. This provider delivers 10× the peer median.Open Payments
Industry payments received
All-time total
$111
Transactions
5
Manufacturers
4
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | 2 | $40.02 | |
| Takeda Pharmaceuticals U.S.A., INC. | 1 | $36.91 | |
| Hologic Sales and Service, LLC | 1 | $19.20 | |
| Kerecis Limited | 1 | $14.58 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
152
Patients
96
Total drug cost
$1,512
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Hydromorphone Hcl | Generic | 46 | 41 | $158 |
| Ondansetron Hcl | Generic | 38 | 34 | $320 |
| Metronidazole | Generic | 32 | 21 | $366 |
| Gabapentin | Generic | 14 | 0 | $134 |
| Diphenoxylate-Atropine (Diphenoxylate Hcl/Atropine) | Brand | 11 | 0 | $334 |
| Pantoprazole Sodium | Generic | 11 | 0 | $201 |
Hospital affiliations
Frequently asked questions
What is Dr. David Giammar's medical specialty?
Dr. David Giammar practices Colon & Rectal Surgery Physician in Westerville, OH.
Where does Dr. David Giammar practice?
Dr. David Giammar practices at 477 Cooper RD Ste 440, Westerville, OH 430818055. Office phone: 3808985561.
What is Dr. David Giammar's NPI?
Dr. David Giammar's National Provider Identifier (NPI) is 1154307858, issued by NPPES.
Does Dr. David Giammar accept Medicare assignment?
Yes. Dr. David Giammar accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. David Giammar commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with straightforward or low level of medical decision making (HCPCS 99231); Established patient office or other outpatient visit (HCPCS 99213); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232). Source: CMS Medicare Physician & Other Practitioners file.