Amy Mackenzie, MD
Internal Medicine Physician · Philadelphia, PA
Amy Mackenzie, MD is an internal medicine physician with a practice address in Philadelphia, Pennsylvania, and NPI 1992944912, issued on Feb 14, 2009. Check the license (Pennsylvania MD437425, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Amy Mackenzie
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- MD437425 PA
MT188649 PA
Self-reported in NPPES; status is on the state search - Practice location
- 925 Chestnut St, Philadelphia, PA 19107
- Phone
- (215) 955-8874
- Enumerated
- Feb 14, 2009
- Record last updated
- Mar 21, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (215) 955-2340
- Medicaid IDs
- 1023236580003 PA
0199591 NJ - Medicare enrollment
- Enrolled (PECOS I20090804000515); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,300 in Pennsylvania → Look up another NPI →
Also registered at 925 Chestnut St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Amy Mackenzie in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD437425Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average internal medicine physician in 2024
622 Medicare Part D claims for 167 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 30% of claims. 18 claims were for opioids.
Most prescribed
- Anastrozole166 claims
- Eliquis66 claims
- Ibrance34 claims
- Xarelto33 claims
- Hydroxyurea30 claims
- Ondansetron Hcl27 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Abington Memorial HospitalWillow Grove, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Amy Mackenzie among 7,300 internal medicine physician records in Pennsylvania
Amy Mackenzie, MD is one of 7,300 internal medicine physician records with a practice address in Pennsylvania. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 47% of them.
- NPI issued2009 · 47% of these records are older, 50% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2005 · median 2008 among the 4,208 with a school on file
- Record last updated2017 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,855 internal medicine physician records list a practice address in Philadelphia
They are 1,855 of the 42,849 NPPES records with a practice address in Philadelphia, and 7,300 internal medicine physician records in Pennsylvania.
All 7,300 in Pennsylvania → Every provider in Philadelphia → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- William Brady, MDPhiladelphia, PA 191071831187731
- Eileen Carpenter, MDPhiladelphia, PA 191071205805827
- Lillian Cohn, M.D.Philadelphia, PA 191071538160825
- Allan Crimm, M.D.Philadelphia, PA 191071720089170
- Lewis Deeugenio, M.D.Philadelphia, PA 191071780664847
- Richard Feldman, MDPhiladelphia, PA 191071417958661
- Jane Fitzpatrick, MDPhiladelphia, PA 191071003880675
- Zuleika Font, M.D.Philadelphia, PA 191071760483945
Common questions
What is Amy Mackenzie, MD's NPI number?
Amy Mackenzie, MD's National Provider Identifier (NPI) is 1992944912, issued on Feb 14, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Amy Mackenzie, MD located?
The NPPES record lists a practice address at 925 Chestnut St, Philadelphia, PA, 19107. Phone: (215) 955-8874. Providers update this record themselves, so call before visiting.
How can I verify Amy Mackenzie, MD's license?
NPPES lists Pennsylvania license number MD437425, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Amy Mackenzie, MD prescribe under Medicare Part D?
In 2024, Amy Mackenzie, MD had 622 Medicare Part D claims for 167 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.