John S. Caskey, MD
Internal Medicine Physician · Santa Fe, NM
John S. Caskey, MD is an internal medicine physician with a practice address in Santa Fe, New Mexico, and NPI 1417061391, issued on Aug 18, 2006. Check the license (New Mexico MD20060456, as entered in NPPES) on the New Mexico Medical Board; the Medicare figures below come from public CMS files.
- Name
- John S. Caskey
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- MD20060456 NM
MD2006-0456 NM
Self-reported in NPPES; status is on the state search - Practice location
- 1421 Luisa St, Santa Fe, NM 87505
- Phone
- (505) 982-8338
- Enumerated
- Aug 18, 2006
- Record last updated
- Apr 28, 2026
- Medicare enrollment
- Enrolled (PECOS I20061101000578); accepts Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 1989
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 770 in New Mexico → Look up another NPI →
Also registered at 1421 Luisa St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nicole Broderson, RN, MSN, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1124308689
- Daniel HealeyMassage Therapist1164892543
- Robyn Holley, CFNPNurse Practitioner1558392654
- Frances Lovett, BS, PHARMD, PHCPharmacotherapy Pharmacist1508003898
- Inessa Mil'Berg, MA, LPCCMental Health Counselor1568949832
- Elizabeth Mulhall, CNPFamily Nurse Practitioner1730540451
Verify John S. Caskey in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Mexico Medical Board
Search for license MD20060456Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.5 times the Medicare Part D claims of the average internal medicine physician in 2024
7,931 Medicare Part D claims for 650 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 174 claims were for opioids.
Most prescribed
- Levothyroxine Sodium416 claims
- Rosuvastatin Calcium407 claims
- Atorvastatin Calcium219 claims
- Losartan Potassium212 claims
- Lisinopril197 claims
- Gabapentin180 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): 87.9 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).
Bills Medicare through one group practice
- John S Caskey MD LLCSanta Fe, NM
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John S. Caskey among 770 internal medicine physician records in New Mexico
John S. Caskey, MD is one of 770 internal medicine physician records with a practice address in New Mexico. 74% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 57% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1989 · median 2009 among the 447 with a school on file
- Record last updated2026 · 54% 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 New Mexico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
41 internal medicine physician records list a practice address in Santa Fe
They are 41 of the 4,551 NPPES records with a practice address in Santa Fe, and 770 internal medicine physician records in New Mexico.
All 770 in New Mexico → Every provider in Santa Fe → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Louise Abel, MDSanta Fe, NM 875051821016593
- Olga Andreyeva, MDSanta Fe, NM 875051356305171
- Boudinot Atterbury, MDSanta Fe, NM 875051720006448
- Avelina Bardwell, MDSanta Fe, NM 875051366469322
- Elisabeth Bishop, M.D.Santa Fe, NM 875051265486112
- John Broom, M.D.Santa Fe, NM 875051568470706
- Karen Endacott, MDSanta Fe, NM 875051598734717
- Richard Gartner, MDSanta Fe, NM 875051952377004
Common questions
What is John S. Caskey, MD's NPI number?
John S. Caskey, MD's National Provider Identifier (NPI) is 1417061391, issued on Aug 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John S. Caskey, MD located?
The NPPES record lists a practice address at 1421 Luisa St, Santa Fe, NM, 87505. Phone: (505) 982-8338. Providers update this record themselves, so call before visiting.
How can I verify John S. Caskey, MD's license?
NPPES lists New Mexico license number MD20060456, as entered by the provider. Search the New Mexico Medical Board at https://www.nmmb.state.nm.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John S. Caskey, MD prescribe under Medicare Part D?
In 2024, John S. Caskey, MD had 7,931 Medicare Part D claims for 650 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is John S. Caskey, MD's MIPS final score?
The 2023 MIPS final score is 87.9 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.