Nelson Guevara Madrilejo, MD
Endocrinology, Diabetes & Metabolism Physician · Bakersfield, CA
Nelson Guevara Madrilejo, MD is an endocrinology, diabetes & metabolism physician with a practice address in Bakersfield, California, and NPI 1023110103, issued on Sep 1, 2006. Check the license (California A47812, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Nelson Guevara Madrilejo
- Credential
- MD
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- A47812 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1801 16TH St, Bakersfield, CA 93301
- Phone
- (661) 326-8989
- Enumerated
- Sep 1, 2006
- Record last updated
- Apr 18, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (661) 326-8991
- Medicare enrollment
- Enrolled (PECOS I20041203000989); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 1,131 in California → Look up another NPI →
Also registered at 1801 16TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Carlos Alvarez, PAPhysician Assistant1023183282
- Janine Bourelle, NPFFamily Nurse Practitioner1619173291
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- Schaul Sarmicanic, MDPlastic and Reconstructive Surgery Physician1801904495
- Larry Yokoyama, MDFamily Medicine Physician1295837375
Verify Nelson Guevara Madrilejo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A47812Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
46% more Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
3,834 Medicare Part D claims for 332 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 50% of claims.
Most prescribed
- Ozempic241 claims
- Levothyroxine Sodium204 claims
- Jardiance158 claims
- Synthroid147 claims
- Mounjaro134 claims
- Nano 2nd Gen Pen Needle128 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): 19.3 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: $2,335.50
97 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 2 group practices
- Centennial Medical Group IncBakersfield, CA
- Mountain Communities Healthcare DistrictWeaverville, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nelson Guevara Madrilejo among 1,131 endocrinology, diabetes & metabolism physician records in California
Nelson Guevara Madrilejo, MD is one of 1,131 endocrinology, diabetes & metabolism physician records with a practice address in California. 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 5% of them.
- NPI issued2006 · 5% of these records are older, 54% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1986 · median 2003 among the 779 with a school on file
- Record last updated2014 · 57% 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 California 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 California
There are 1,131 endocrinology, diabetes & metabolism physician records in California.
All 1,131 in California → Every provider in Bakersfield → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Roxanne Aquino, MDBakersfield, CA 933011437226370
- Robert Catania, M.D.Bakersfield, CA 933011376622787
- Victor Ettinger, M.D.Bakersfield, CA 933011891729653
- Sang Hun Han, MDBakersfield, CA 933011598262370
- Sukhmani Singh, MDBakersfield, CA 933011366857922
- Sangeeta Chandramahanti, MD.Bakersfield, CA 933061740506138
- Ronakkumar Patel, M.DBakersfield, CA 933091841615036
- Niyoti Reddy, M.D.Bakersfield, CA 933091407207731
Common questions
What is Nelson Guevara Madrilejo, MD's NPI number?
Nelson Guevara Madrilejo, MD's National Provider Identifier (NPI) is 1023110103, issued on Sep 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Nelson Guevara Madrilejo, MD located?
The NPPES record lists a practice address at 1801 16TH St, Bakersfield, CA, 93301. Phone: (661) 326-8989. Providers update this record themselves, so call before visiting.
How can I verify Nelson Guevara Madrilejo, MD's license?
NPPES lists California license number A47812, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Nelson Guevara Madrilejo, MD prescribe under Medicare Part D?
In 2024, Nelson Guevara Madrilejo, MD had 3,834 Medicare Part D claims for 332 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. Part D covers Medicare prescriptions only.
What is Nelson Guevara Madrilejo, MD's MIPS final score?
The 2023 MIPS final score is 19.3 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.