Karl Aaron Spector, MD
Internal Medicine Physician · Bel Air, MD
Karl Aaron Spector, MD is an internal medicine physician with a practice address in Bel Air, Maryland, and NPI 1164472551, issued on May 10, 2006. Check the license (Maryland D0055143, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Karl Aaron Spector
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- D0055143 MD
Self-reported in NPPES; status is on the state search - Practice location
- 602 S Atwood RD, Bel Air, MD 21014
- Phone
- (410) 515-6774
- Enumerated
- May 10, 2006
- Record last updated
- Jun 11, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (410) 515-0356
- Medicare enrollment
- Enrolled (PECOS I20081014000560); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,904 in Maryland → Look up another NPI →
Also registered at 602 S Atwood RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Karl Aaron Spector in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0055143Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.2 times the Medicare Part D claims of the average internal medicine physician in 2024
10,065 Medicare Part D claims for 971 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 356 claims were for opioids.
Most prescribed
- Atorvastatin Calcium665 claims
- Amlodipine Besylate395 claims
- Lisinopril311 claims
- Levothyroxine Sodium294 claims
- Pantoprazole Sodium277 claims
- Metoprolol Succinate271 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.
Industry payments in 2024: $1,002.49
56 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 50,334 providers of this specialty with any payment received $1,303.06 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 3 group practices
- Agape Physical Therapy And Sports Rehabilitation LPForest Hill, MD
- Privia Care Center LLCFrederick, MD
- Privia Medical Group, LLCAnnapolis, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karl Aaron Spector among 3,904 internal medicine physician records in Maryland
Karl Aaron Spector, MD is one of 3,904 internal medicine physician records with a practice address in Maryland. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 55% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1996 · median 2003 among the 2,445 with a school on file
- Record last updated2015 · 59% 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 Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
63 internal medicine physician records list a practice address in Bel Air
They are 63 of the 1,945 NPPES records with a practice address in Bel Air, and 3,904 internal medicine physician records in Maryland.
All 3,904 in Maryland → Every provider in Bel Air → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Vijay Abhyankar, M.D.Bel Air, MD 210141225033806
- David Dunn, M.D.Bel Air, MD 210141700881315
- Qinglin Gao, M.D.Bel Air, MD 210141053381780
- Philip Halstead, M.D.Bel Air, MD 210141962405704
- John Lynch, MDBel Air, MD 210141194721357
- David McClure, M.D.Bel Air, MD 210141275538878
- Ann Osman, M.D.Bel Air, MD 210141184629784
- Sherif Osman, M.D.Bel Air, MD 210141245235852
Common questions
What is Karl Aaron Spector, MD's NPI number?
Karl Aaron Spector, MD's National Provider Identifier (NPI) is 1164472551, issued on May 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Karl Aaron Spector, MD located?
The NPPES record lists a practice address at 602 S Atwood RD, Bel Air, MD, 21014. Phone: (410) 515-6774. Providers update this record themselves, so call before visiting.
How can I verify Karl Aaron Spector, MD's license?
NPPES lists Maryland license number D0055143, 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 Karl Aaron Spector, MD prescribe under Medicare Part D?
In 2024, Karl Aaron Spector, MD had 10,065 Medicare Part D claims for 971 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.