Doctor profile · Federal record
Dr. Michael Zager, MD
Internal Medicine Physician (CMS: Internal Medicine) · Allentown, PA
- NPI 1326087362
- Accepts Medicare
- 35 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
798 Hausman RD, Suite 100
Allentown, PA 181049108
(610) 336-8260
fax (610) 336-8269 - Mailing address
-
Po Box 783311
Philadelphia, PA 191781754
Credentials & registration
- NPI registered
- June 2006 — 20 yrs on file
- Profile last updated
- March 3, 2016
- Year of graduation
- 1991 — 35 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Pennsylvania #MD052741L
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1326087362. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,910
Distinct HCPCS
10
Medicare allowed
$174,917
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 492 | 240 | $76 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 376 | 237 | $123 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 219 | 219 | $125 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 141 | 140 | $126 | |
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 136 | 72 | $47 | |
G0008 |
Administration of influenza virus vaccine | 100 | 97 | $29 | |
90662 |
Influenza vaccine split virus, preservative free | 79 | 79 | $71 | |
83036 |
Hemoglobin a1c level | 60 | 49 | $10 | |
90480 |
Admn sarscov2 vacc 1 dose | 49 | 49 | $39 | |
91320 |
Sarscv2 vac 30mcg trs-suc im | 49 | 49 | $128 |
In context: peer comparison
Among 46 peers in Allentown Internal Medicine Physician, average services per provider: 85. This provider delivers 22× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
2,861
Patients
751
Total drug cost
$42,217
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 378 | 100 | $5,028 |
| Levothyroxine Sodium | Generic | 339 | 87 | $5,422 |
| Amlodipine Besylate | Generic | 272 | 73 | $2,258 |
| Lisinopril | Generic | 219 | 60 | $2,038 |
| Simvastatin | Generic | 212 | 58 | $2,352 |
| Metformin Hcl | Generic | 178 | 48 | $1,561 |
| Metoprolol Succinate | Generic | 178 | 44 | $4,548 |
| Losartan Potassium | Generic | 163 | 49 | $2,850 |
| Oxycodone Hcl | Generic | 158 | 24 | $3,812 |
| Alprazolam | Generic | 139 | 36 | $1,239 |
Hospital affiliations
Frequently asked questions
What is Dr. Michael Zager's medical specialty?
Dr. Michael Zager practices Internal Medicine Physician in Allentown, PA.
Where does Dr. Michael Zager practice?
Dr. Michael Zager practices at 798 Hausman RD, Allentown, PA 181049108. Office phone: 6103368260.
What is Dr. Michael Zager's NPI?
Dr. Michael Zager's National Provider Identifier (NPI) is 1326087362, issued by NPPES.
Does Dr. Michael Zager accept Medicare assignment?
Yes. Dr. Michael Zager accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Michael Zager commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Established patient office or other outpatient visit (HCPCS 99214); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439). Source: CMS Medicare Physician & Other Practitioners file.