Jonathan David Greifenkamp, MD
Cardiovascular Disease Physician · Longview, TX
Jonathan David Greifenkamp, MD is a cardiovascular disease physician with a practice address in Longview, Texas, and NPI 1235333808, issued on Jun 14, 2007. Check the license (Texas L6919, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Jonathan David Greifenkamp
- Credential
- MD
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- L6919 TX
Self-reported in NPPES; status is on the state search - Practice location
- 709 Hollybrook Dr, Longview, TX 75605
- Phone
- (903) 757-4691
- Enumerated
- Jun 14, 2007
- Record last updated
- Nov 9, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20080711000144); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical Branch At Galveston, 2000
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 1,603 in Texas → Look up another NPI →
Also registered at 709 Hollybrook Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lora BartonAcute Care Nurse Practitioner1356156657
- Phyllis Cary, RPHPharmacist1972713782
- Charles Crumpler, M.D.Interventional Cardiology Physician1609986165
- Jack Elder, MDSports Medicine (Orthopaedic Surgery) Physician1184691792
- Samir Germanwala, DOCardiovascular Disease Physician1043287816
- Kathleen Harris, MDInternal Medicine Physician1407050008
Verify Jonathan David Greifenkamp in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license L6919Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
61% more Medicare Part D claims than the average cardiovascular disease physician in 2024
4,953 Medicare Part D claims for 809 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims.
Most prescribed
- Clopidogrel692 claims
- Atorvastatin Calcium373 claims
- Eliquis342 claims
- Carvedilol291 claims
- Ezetimibe237 claims
- Furosemide237 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 MIPS final score for 2023 (Medicare payment program): 90.8 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $2,607.38
156 payments; by number, the most common kind was food and beverage; the largest payer was Biosense Webster, Inc. The 16,686 providers of this specialty with any payment received $3,819.56 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 one group practice
- Regional Clinics OF LongviewLongview, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jonathan David Greifenkamp among 1,603 cardiovascular disease physician records in Texas
Jonathan David Greifenkamp, MD is one of 1,603 cardiovascular disease physician records with a practice address in Texas. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 58% of them.
- NPI issued2007 · 58% of these records are older, 33% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 76% of these records are
- Graduated2000 · median 1998 among the 1,219 with a school on file
- Record last updated2021 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in Texas
There are 1,603 cardiovascular disease physician records in Texas.
All 1,603 in Texas → Every provider in Longview → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Samir Germanwala, DOLongview, TX 756051043287816
- Rajeev Singh, M.D.Longview, TX 756051225094956
- James Farr, M.D.Longview, TX 756011275543274
- Mohammad KhatibLongview, TX 756011861999781
- Peter Macander, MDLongview, TX 756011285613851
- John McClish, MDLongview, TX 756011427019249
- Khashayar Vahdat, M.D.Longview, TX 756011528323953
- Iraj Roshan, MDCarthage, TX 756331699705756
Common questions
What is Jonathan David Greifenkamp, MD's NPI number?
Jonathan David Greifenkamp, MD's National Provider Identifier (NPI) is 1235333808, issued on Jun 14, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Jonathan David Greifenkamp, MD located?
The NPPES record lists a practice address at 709 Hollybrook Dr, Longview, TX, 75605. Phone: (903) 757-4691. Providers update this record themselves, so call before visiting.
How can I verify Jonathan David Greifenkamp, MD's license?
NPPES lists Texas license number L6919, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jonathan David Greifenkamp, MD prescribe under Medicare Part D?
In 2024, Jonathan David Greifenkamp, MD had 4,953 Medicare Part D claims for 809 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. Part D covers Medicare prescriptions only.
What is Jonathan David Greifenkamp, MD's MIPS final score?
The 2023 MIPS final score is 90.8 of 100. 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.