NPPES file of Aug 9, 2026

Markus Sonntag, MD

Internal Medicine Physician · Orange Park, FL

Markus Sonntag, MD is an internal medicine physician with a practice address in Orange Park, Florida, and NPI 1942216031, issued on Jul 31, 2006. Check the license (Florida ME92805, as entered in NPPES) on the Florida health license search; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1942216031
Name
Markus Sonntag
Credential
MD
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
ME92805 FL
Self-reported in NPPES; status is on the state search
Practice location
2035 Professional Center Drive, Orange Park, FL 32073
Phone
(904) 272-0384
Enumerated
Jul 31, 2006
Record last updated
Jun 18, 2025
Fax
(904) 272-6748
Medicaid ID
273161400 FL
Medicare enrollment
Enrolled (PECOS I20050823000409); may accept Medicare assignment
Medical or professional school
University Of Miami, Lm Miller School Of Medicine, 2001
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 2035 Professional Center Drive

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. John Arnold, MDInternal Medicine Physician1477511574

Verify Markus Sonntag in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersFlorida health license search
    Search for license ME92805
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Florida license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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2.4 times the Medicare Part D claims of the average internal medicine physician in 2024

7,664 Medicare Part D claims for 567 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 28 claims were for opioids.

  1. Markus Sonntag7,664
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium536 claims
  2. Rosuvastatin Calcium425 claims
  3. Levothyroxine Sodium320 claims
  4. Amlodipine Besylate288 claims
  5. Lisinopril246 claims
  6. Losartan Potassium217 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 3 group practices

  1. Lake Area Physical Therapy Inc.Melrose, FL
  2. Mayo Clinic JacksonvilleJacksonville, FL
  3. St Vincent's Ambulatory Care IncJacksonville, FL

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Markus Sonntag among 10,151 internal medicine physician records in Florida

Markus Sonntag, MD is one of 10,151 internal medicine physician records with a practice address in Florida. 84% 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 10% of them.

  • NPI issued2006 · 10% of these records are older, 55% newer
  • In a Medicare fileYes · 84% of these records are
  • In the CMS Doctors and Clinicians fileYes · 65% of these records are
  • Graduated2001 · median 2004 among the 6,606 with a school on file
  • Record last updated2025 · 48% 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 Florida practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

57 internal medicine physician records list a practice address in Orange Park

They are 57 of the 2,099 NPPES records with a practice address in Orange Park, and 10,151 internal medicine physician records in Florida.

The 8 internal medicine physician records with the nearest ZIP codes

  1. John Arnold, MDOrange Park, FL 320731477511574
  2. Gary Bernard, M.D.Orange Park, FL 320731720181910
  3. Jeffrey Chesler, MDOrange Park, FL 320731639258221
  4. Rosy George, MDOrange Park, FL 320731225065600
  5. Nilmarie Guzman, MDOrange Park, FL 320731245390723
  6. Nadeem Maalouli, M.D.Orange Park, FL 320731053379347
  7. Suzanne Martinez, MDOrange Park, FL 320731295759652
  8. Charles Phillips, MDOrange Park, FL 320731134187230

Common questions

What is Markus Sonntag, MD's NPI number?

Markus Sonntag, MD's National Provider Identifier (NPI) is 1942216031, issued on Jul 31, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Markus Sonntag, MD located?

The NPPES record lists a practice address at 2035 Professional Center Drive, Orange Park, FL, 32073. Phone: (904) 272-0384. Providers update this record themselves, so call before visiting.

How can I verify Markus Sonntag, MD's license?

NPPES lists Florida license number ME92805, as entered by the provider. Search the Florida health license search at https://mqa-internet.doh.state.fl.us/mqasearchservices/healthcareproviders. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Markus Sonntag, MD prescribe under Medicare Part D?

In 2024, Markus Sonntag, MD had 7,664 Medicare Part D claims for 567 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.