James Lester Neifing, MD
Endocrinology, Diabetes & Metabolism Physician · Portland, OR
James Lester Neifing, MD is an endocrinology, diabetes & metabolism physician with a practice address in Portland, Oregon, and NPI 1437207941, issued on Jan 8, 2007. Check the license (Oregon MD15260, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- James Lester Neifing
- Credential
- MD
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- MD15260 OR
Self-reported in NPPES; status is on the state search - Practice location
- 9135 SW Barnes RD Ste 985, Portland, OR 97225
- Phone
- (503) 297-3336
- Enumerated
- Jan 8, 2007
- Record last updated
- Mar 7, 2023
- Fax
- (503) 297-3338
- Medicaid ID
- 032941 OR
- Medicare enrollment
- Enrolled (PECOS I20100316000285); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 104 in Oregon → Look up another NPI →
Also registered at 9135 SW Barnes RD Ste 985
A shared address usually means a shared clinic or building; it does not show who employs whom.
- James Beard, MDEndocrinology, Diabetes & Metabolism Physician1053469569
- Richard Bergstrom, MDEndocrinology, Diabetes & Metabolism Physician1326196841
- Amy Carter, F.N.P.Nurse Practitioner1215302336
- Radhika Chugh, M.D.Endocrinology, Diabetes & Metabolism Physician1427398247
- Scott Grady, MDEndocrinology, Diabetes & Metabolism Physician1396893897
- Wiley Harkens, DOEndocrinology, Diabetes & Metabolism Physician1588285522
Verify James Lester Neifing in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD15260Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.7 times the Medicare Part D claims of the average endocrinology, diabetes & metabolism physician in 2024
7,231 Medicare Part D claims for 745 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 45% of claims.
Most prescribed
- Levothyroxine Sodium803 claims
- Rosuvastatin Calcium698 claims
- Jardiance449 claims
- Ozempic358 claims
- Synthroid339 claims
- Metformin Hcl Er272 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): 19.8 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: $21,692.66
157 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 5,661 providers of this specialty with any payment received $5,742.15 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
- Portland Diabetes And EndocrinologyPortland, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James Lester Neifing among 104 endocrinology, diabetes & metabolism physician records in Oregon
James Lester Neifing, MD is one of 104 endocrinology, diabetes & metabolism physician records with a practice address in Oregon. 72% 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 53% of them.
- NPI issued2007 · 53% of these records are older, 34% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1986 · median 2001 among the 67 with a school on file
- Record last updated2023 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Oregon
There are 104 endocrinology, diabetes & metabolism physician records in Oregon.
All 104 in Oregon → Every provider in Portland → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- James Beard, MDPortland, OR 972251053469569
- Richard Bergstrom, MDPortland, OR 972251326196841
- Stephen Bookin, MDPortland, OR 972251801944301
- Michael Chu, MDPortland, OR 972251659576437
- Radhika Chugh, M.D.Portland, OR 972251427398247
- Scott Grady, MDPortland, OR 972251396893897
- Wiley Harkens, DOPortland, OR 972251588285522
- Barbara Hettinger, M.D., PH.DPortland, OR 972251649484544
Common questions
What is James Lester Neifing, MD's NPI number?
James Lester Neifing, MD's National Provider Identifier (NPI) is 1437207941, issued on Jan 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is James Lester Neifing, MD located?
The NPPES record lists a practice address at 9135 SW Barnes RD Ste 985, Portland, OR, 97225. Phone: (503) 297-3336. Providers update this record themselves, so call before visiting.
How can I verify James Lester Neifing, MD's license?
NPPES lists Oregon license number MD15260, as entered by the provider. Search the Oregon Medical Board at https://www.oregon.gov/OMB/Pages/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does James Lester Neifing, MD prescribe under Medicare Part D?
In 2024, James Lester Neifing, MD had 7,231 Medicare Part D claims for 745 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. Part D covers Medicare prescriptions only.
What is James Lester Neifing, MD's MIPS final score?
The 2023 MIPS final score is 19.8 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.