Louis Chang, MD
Neurological Surgery Physician · Bethesda, MD
Louis Chang, MD is a neurological surgery physician with a practice address in Bethesda, Maryland, and NPI 1235265364, issued on Feb 25, 2007. Check the license (Maryland D74936, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Louis Chang
- Credential
- MD
- Primary taxonomy
- Neurological Surgery Physician 207T00000X
- License numbers
- D74936 MD
301195 NY
Self-reported in NPPES; status is on the state search - Practice location
- 10215 Fernwood RD, Bethesda, MD 20817
- Phone
- (301) 897-8850
- Enumerated
- Feb 25, 2007
- Record last updated
- Jun 8, 2022
- Medicare enrollment
- Enrolled (PECOS I20220616002138); may accept Medicare assignment
- Medical or professional school
- State University Of New York Downstate Medical Center, 2004
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 10215 Fernwood RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Loreto Albiol, MDInternal Medicine Physician1841301132
- Jessica Allen, PA-CMedical Physician Assistant1497888069
- Israel Alter, MDObstetrics & Gynecology Physician1912998790
- Meenakshi Andrew, D.OInternal Medicine Physician1750583548
- Jacqueline Apgar, MDObstetrics & Gynecology Physician1013908516
- Susan BaruchInternal Medicine Physician1528032976
Verify Louis Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D74936Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average neurological surgery physician in 2024
23 Medicare Part D claims for 11 beneficiaries, against an average of 172 among the 4,378 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 74.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $532.93
1 payment: travel and lodging; the largest payer was Globus Medical, Inc. The 5,377 providers of this specialty with any payment received $14,925.58 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Johns Hopkins UniversityBethesda, MD
- Johns Hopkins UniversityBaltimore, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Neurological Surgery Physician providers in Maryland
There are 163 neurological surgery physician records in Maryland.
Other neurological surgery physician records in Maryland
- Bizhan Aarabi, MDBaltimore, MD1174578876
- James Abbott, MDJoppa, MD1952329146
- Hatem Abdo, MDBaltimore, MD1053352492
- Enslin Aldrich, MDBaltimore, MD1780639393
- Aminullah Amini, M.D.Silver Spring, MD1922286517
- Amjad Anaizi, MDClinton, MD1396996385
- William Anderson, M.D.Baltimore, MD1265498521
- Kheder Ashker, M.D.Cumberland, MD1770561979
- William Ashley, M.D., PH.D., M.B.A.Baltimore, MD1033238647
- Sylvanus Ayeni, MDSilver Spring, MD1891883054
Common questions
What is Louis Chang, MD's NPI number?
Louis Chang, MD's National Provider Identifier (NPI) is 1235265364, issued on Feb 25, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Louis Chang, MD located?
The NPPES record lists a practice address at 10215 Fernwood RD, Bethesda, MD, 20817. Phone: (301) 897-8850. Providers update this record themselves, so call before visiting.
How can I verify Louis Chang, MD's license?
NPPES lists Maryland license number D74936, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Louis Chang, MD prescribe under Medicare Part D?
In 2024, Louis Chang, MD had 23 Medicare Part D claims for 11 beneficiaries; the average among neurological surgery physician prescribers was 172. Part D covers Medicare prescriptions only.
What is Louis Chang, MD's MIPS final score?
The 2023 MIPS final score is 74.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.