Internal Medicine, Critical Care Medicine · Columbia, MO
NPI
1306108790
Since 2012
Specialty
Internal Medicine, Critical Care Medicine
Code 207RC0200X
Group practices
1
Medicare group memberships
Hospitals
1
Hospital affiliations
1020 Hitt St
Columbia, MO, 65212
Phone (573) 882-8788
Groups this clinician bills Medicare through
Medicare paid, 2024
$41K
566 services
Medicare patients, 2024
220
Average age 69
Drug cost, 2024
$3.1M
525 prescriptions
Company payments, 2025
$53.98
From 5 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Zachary M Holliday was code 99291 (critical care e&m), 90 times for 56 patients. In total Zachary M Holliday billed 566 services in 39 codes, and Medicare paid $41K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2023-04-18.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| 99291 Critical Care E&M | Facility | 90 | 56 | $170.17 | $15K |
| 99233 Hospital E&M - Subsequent | Facility | 74 | 33 | $87.14 | $6,448 |
| G2211 Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's | Facility | 59 | 50 | $13.05 | $770 |
| 99232 Hospital E&M - Subsequent | Facility | 54 | 38 | $61.46 | $3,319 |
| 99214 Office E&M - Established | Facility | 50 | 41 | $75.54 | $3,777 |
| 99213 Office E&M - Established | Facility | 34 | 33 | $51.51 | $1,751 |
| 99215 Office E&M - Established | Facility | 26 | 16 | $102.31 | $2,660 |
| 94618 Pulmonary Function Testing | Facility | 24 | 24 | $14.80 | $355 |
| 94010 Pulmonary Function Testing | Facility | 18 | 17 | $6.17 | $111 |
| 94729 Pulmonary Function Testing | Facility | 17 | 17 | $6.68 | $114 |
| 94060 Pulmonary Function Testing | Facility | 15 | 15 | $7.64 | $115 |
| 99222 Hospital E&M - Initial | Facility | 11 | 11 | $104.96 | $1,155 |
By year: 2022 $35K for 480 services; 2023 $29K for 346 services; 2024 $41K for 566 services.
Medicare prescription drug claims, 2024
In 2024, the drug Zachary M Holliday prescribed most often to Medicare patients was Trikafta (Elexacaftor/Tezacaftor/Ivacaft), with 91 prescriptions and refills. In total Zachary M Holliday wrote 525 Medicare prescriptions that cost $3.1M.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Trikafta Elexacaftor/Tezacaftor/Ivacaft | 91 | 91 | Under 11 | $2.3M |
| Azithromycin Generic | 75 | 77 | 12 | $680 |
| Ventolin Hfa Albuterol Sulfate | 40 | 40 | Under 11 | $2,127 |
| Omeprazole Generic | 32 | 32 | Under 11 | $87.89 |
| Fluticasone Propionate Generic | 25 | 33 | Under 11 | $165 |
| Pertzye Lipase/Protease/Amylase | 24 | 24 | Under 11 | $220K |
| Albuterol Sulfate Hfa Albuterol Sulfate | 18 | 39 | Under 11 | $599 |
| Mometasone Furoate Generic | 18 | 18 | Under 11 | $1,345 |
| Symbicort Budesonide/Formoterol Fumarate | 18 | 20 | Under 11 | $4,300 |
| Budesonide-Formoterol Fumarate Budesonide/Formoterol Fumarate | 15 | 19 | Under 11 | $2,916 |
| Montelukast Sodium Generic | 14 | 14 | Under 11 | $49.57 |
| Creon Lipase/Protease/Amylase | 14 | 14 | Under 11 | $69K |
| Symdeko Tezacaftor/Ivacaftor | 14 | 14 | Under 11 | $326K |
| Dupixent Pen Dupilumab | 13 | 13 | Under 11 | $46K |
| Mirtazapine Generic | 12 | 12 | Under 11 | $41.16 |
Brand drugs: 282 claims; generic drugs: - claims.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Zachary M Holliday $53.98 ($53.98 in general payments such as food, travel and fees) from 5 companies. The largest payer was La Jolla Pharmaceutical Company with $20.61.
| Company | Payments | Amount |
|---|---|---|
| La Jolla Pharmaceutical Company | 1 | $20.61 |
| Aimmune Therapeutics, Inc. | 1 | $19.25 |
| Philips North America LLC PHG | 1 | $14.12 |
Official US government data on Original Medicare services, Medicare prescription drug plans and the payments drug and device companies must report. Services with fewer than 11 patients and drugs with fewer than 11 claims are not published. Procedure codes are shown by number with their public category.