Dr. Aaron Lee Haag, DO
- Part D claims, 2024
- 198
- Hospital affiliations
- 1
- Medical groups
- 2
- State license
- 1
- Year NPI issued
- 2019
- Practice address
- 500 University Drive, Hershey, PA 17033
- Practice phone
- Call (717) 531-8521
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Haag's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Aaron Lee Haag is an internist in Hershey, Pennsylvania
Dr. Haag practices at Penn State Health Milton S. Hershey Medical Center in Hershey, Pennsylvania, part of Penn State.
Dr. Haag's NPI, 1669934600, was assigned on April 1, 2019. Dr. Haag graduated from West Virginia School of Osteopathic Medicine in 2019. Dr. Haag holds Pennsylvania license OS022136.
- NPI
- 1669934600NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2567845530
- NPI enumeration date
- April 1, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (717) 531-8521
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Aaron Lee Haag practices at Penn State Health Milton S. Hershey Medical Center in Hershey, Pennsylvania
Dr. Haag's primary practice is Penn State Health Milton S. Hershey Medical Center, at 500 University Drive, Hershey, PA 17033 in Dauphin County. The practice phone is (717) 531-8521.
- Penn State Health Milton S. Hershey Medical Center500 University Drive, Hershey, PA 17033 · Dauphin CountyPhone(717) 531-8521
Source: Dmand AI Affiliation Data
Dr. Aaron Lee Haag is affiliated with 2 sites of care and 2 medical groups
Dr. Haag's primary practice is Penn State Health Milton S. Hershey Medical Center in Hershey, Pennsylvania, part of Penn State. The medical group on file is AHN Primary Care - Family Med Associates at H+W Pavilion Bethel Park. Dmand AI also links Dr. Haag to 1 more group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Aaron Lee Haag's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Haag practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Penn State Health Milton S. Hershey Medical Center | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Aaron Lee Haag is one of 5,665 internists in Pennsylvania
Internal medicine is Dr. Haag's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Haag is licensed in Pennsylvania.
Specialties and state licenses
- Internal medicine, PennsylvaniaPrimary
Internists near Dr. Haag
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Aaron Lee Haag's patients have a median age of 73
Across all payers, Dmand AI patient panel data puts Dr. Haag's median patient age at 73, with 36% women.
Dr. Haag's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women36%
- Men64%
Source: Dmand AI Patient Panel Data
Dr. Aaron Lee Haag wrote 198 Medicare Part D claims in 2024
In 2024, Dr. Haag wrote 198 Medicare Part D claims for 39 patients. 39% of them were for generic drugs. CMS names the drug for 110 of them, across 5 drugs with 11 or more claims each, at $51,757 in total drug cost. In 2022, CMS named 31 claims across 2 drugs.
Dr. Haag's Part D claims by kind of drug, 2024
- Generic78 claims39%
- Brand-name120 claims61%
Dr. Haag's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Haag's Part D claims, 2024
- Antibiotics12%23 of 198 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2022 to 2024
- 2022
- 2024
- Claims for drugs CMS names
- 2022: 312024: 110255%
Drugs named by CMS: 5 in 2024, 2 in 2022.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Aaron Lee Haag takes part in Medicare
Dr. Haag accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Aaron Lee Haag graduated from West Virginia School of Osteopathic Medicine
Dr. Haag graduated from West Virginia School of Osteopathic Medicine in 2019.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Aaron Lee Haag's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Aaron Lee Haag
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Aaron Lee Haag's NPI number?
Dr. Aaron Lee Haag's NPI number is 1669934600. It was assigned on April 1, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. Aaron Lee Haag?
Dr. Aaron Lee Haag is an internist in Hershey, Pennsylvania. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Aaron Lee Haag practice?
Dr. Haag practices at 500 University Drive, Hershey, PA 17033. Dr. Haag's primary practice is Penn State Health Milton S. Hershey Medical Center in Hershey, Pennsylvania, part of Penn State. Dmand AI also links Dr. Haag to 1 group practice or clinic and 1 medical group.
What is Dr. Aaron Lee Haag's office phone number?
The practice phone on file for Dr. Haag is (717) 531-8521.
What is Dr. Aaron Lee Haag's medical license number?
Dr. Haag holds Pennsylvania license OS022136.
Which hospitals is Dr. Aaron Lee Haag affiliated with?
Dr. Haag practices at Penn State Health Milton S. Hershey Medical Center in Hershey, Pennsylvania.
What medical group is Dr. Aaron Lee Haag part of?
Dr. Haag is linked to AHN Primary Care - Family Med Associates at H+W Pavilion Bethel Park. Dmand AI links Dr. Haag to 1 more medical group.
Does Dr. Aaron Lee Haag accept Medicare?
Yes. CMS lists Dr. Haag as accepting Medicare assignment.
Where did Dr. Aaron Lee Haag go to medical school?
Dr. Haag graduated from West Virginia School of Osteopathic Medicine in 2019.
What drugs does Dr. Aaron Lee Haag prescribe most?
In 2024 Medicare Part D data, Dr. Haag's most prescribed drugs by claims were Trelegy Ellipta, Albuterol Sulfate Hfa and Anoro Ellipta.
How long has Dr. Aaron Lee Haag been practicing?
Dr. Haag graduated from medical school in 2019, 7 years ago.
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