Jeffrey L. Sponsler, M.D.
Specialist · Wasilla, AK
Jeffrey L. Sponsler, M.D. is a specialist with a practice address in Wasilla, Alaska, and NPI 1538206164, issued on Jan 31, 2007. Check the license (Alaska 5128, as entered in NPPES) with the Alaska board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Jeffrey L. Sponsler
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- License number
- 5128 AK
Self-reported in NPPES; status is on the state search - Practice location
- 4551 E Bogard RD, Wasilla, AK 99654
- Phone
- (907) 373-6500
- Enumerated
- Jan 31, 2007
- Record last updated
- Oct 17, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (888) 456-0663
- Medicaid ID
- MD5128 AK
- Entity
- Type 1 · individual
8 nearest specialist records → All 126 in Alaska → Look up another NPI →
Also registered at 4551 E Bogard RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Erica MuchaFamily Nurse Practitioner1336856483
- Charlotte Nelson, A.N.P.Nurse Practitioner1073650628
Verify Jeffrey L. Sponsler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Alaska board licenses this profession
Search for license 5128Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
50% fewer Medicare Part D claims than the average specialist in 2024
684 Medicare Part D claims for 116 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Levetiracetam89 claims
- Topiramate85 claims
- Carbidopa-Levodopa32 claims
- Donepezil Hcl29 claims
- Oxcarbazepine24 claims
- Gabapentin20 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): 30 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: $1,734.18
70 payments; by number, the most common kind was food and beverage; the largest payer was Neurocrine Biosciences, Inc. The 5,844 providers of this specialty with any payment received $4,760.79 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.
Jeffrey L. Sponsler among 126 specialist records in Alaska
Jeffrey L. Sponsler, M.D. is one of 126 specialist records with a practice address in Alaska. 10% 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 21% of them.
- NPI issued2007 · 21% of these records are older, 55% newer
- In a Medicare fileYes · 10% of these records are
- In the CMS Doctors and Clinicians fileNo · 4% of these records are
- Record last updated2012 · 94% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a Alaska practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Specialist providers in Alaska
There are 126 specialist records in Alaska.
All 126 in Alaska → Every provider in Wasilla → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Victoria BrownWasilla, AK 996541457804957
- Devan Clark, LMTWasilla, AK 996541497202279
- Kerri Denney, LMTWasilla, AK 996541902350861
- Meda Ferrenburg, LMTWasilla, AK 996541003111089
- Candice Hilty, LMTWasilla, AK 996541639625957
- Sabrina Kendall, LMTWasilla, AK 996541235589276
- Charles Layman, M.D.Wasilla, AK 996541154418945
- Charlotte Mahoy, LMTWasilla, AK 996541336599117
Common questions
What is Jeffrey L. Sponsler, M.D.'s NPI number?
Jeffrey L. Sponsler, M.D.'s National Provider Identifier (NPI) is 1538206164, issued on Jan 31, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Jeffrey L. Sponsler, M.D. located?
The NPPES record lists a practice address at 4551 E Bogard RD, Wasilla, AK, 99654. Phone: (907) 373-6500. Providers update this record themselves, so call before visiting.
How can I verify Jeffrey L. Sponsler, M.D.'s license?
NPPES lists Alaska license number 5128, as entered by the provider. Search the Alaska board that licenses this profession; the NPPES record confirms identity only.
How much does Jeffrey L. Sponsler, M.D. prescribe under Medicare Part D?
In 2024, Jeffrey L. Sponsler, M.D. had 684 Medicare Part D claims for 116 beneficiaries; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.
What is Jeffrey L. Sponsler, M.D.'s MIPS final score?
The 2023 MIPS final score is 30 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.