Physician Profile
Unclaimed ProfileAbout ZAGER
Michael L Zager, MD is a healthcare provider in Allentown, PA specializing in internal medicine. According to Medicare claims data, Michael cared for 1,374 Medicare patients across 1,794 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (610) 336-8260
- Email not available
Practice Locations
798 HAUSMAN RD SUITE 100
Allentown, PA 18104
Procedures Most Often Billed to Medicare
1,794 services · 1,374 patients · 20 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Influenza vaccine split virus, preservative free | Treatment | 90662 |
67 |
| Sarscv2 vac 30mcg trs-suc im | Treatment | 91320 |
42 |
| Admn sarscov2 vacc 1 dose | Treatment | 90480 |
42 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
23 |
| Hepatitis b vaccine (hepb), cpg-adjuvanted, adult dosage, 2 dose or 4 dose schedule, for intramuscular use | Treatment | 90739 |
14 |
| Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | Treatment | 90677 |
13 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
449 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
314 |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
177 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
139 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other internal medicines at this location 7
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 4
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 30 related providers in 4 groups
Other internal medicines in Allentown 7
Same specialty, same city.
Trained at Other 7
Other providers in the same specialty who trained at the same institution.
Class of 1991 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Influenza vaccine split virus, preservative free 8
Providers in PA who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Zager?
Dr. Zager is an internal medicine in Allentown, PA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
What is Dr. Zager's address?
Dr. Zager is listed at 798 HAUSMAN RD SUITE 100, Allentown, PA 18104. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Zager?
The number on file is (610) 336-8260. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Zager's NPI number?
Dr. Zager's National Provider Identifier is 1326087362. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Zager train?
Dr. Zager attended Other, graduating in 1991. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Zager been practicing?
Dr. Zager has 35 years experience. Calculated from a graduation year of 1991, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Zager perform?
According to Medicare billing data, Dr. Zager provides treatments such as influenza vaccine split virus, preservative free and sarscv2 vac 30mcg trs-suc im, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Zager confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Zager. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.