Nelson Concepcion De Guzman, MD
Internal Medicine Physician · Redding, CA
Nelson Concepcion De Guzman, MD is an internal medicine physician with a practice address in Redding, California, and NPI 1982680781, issued on Dec 22, 2005. Check the license (California A73959, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Nelson Concepcion De Guzman
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A73959 CA
Self-reported in NPPES; status is on the state search - Practice location
- 351 Hartnell Ave, Redding, CA 96002
- Phone
- (530) 226-7524
- Enumerated
- Dec 22, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (530) 226-7568
- Medicare enrollment
- Enrolled (PECOS I20050603001048); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 351 Hartnell Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Leann Arnett, FNPFamily Nurse Practitioner1811002397
- Becky Ash, RNRegistered Nurse1053644138
- Sara Bailey, RN, BSN, MSN, PHNHome Health Registered Nurse1801210620
- Roberta Bass, AU.D.Audiologist1396777959
- Kenneth BeamerGastroenterology Registered Nurse1033727953
- Janet Boehle, RNGastroenterology Registered Nurse1598098303
Verify Nelson Concepcion De Guzman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A73959Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average internal medicine physician in 2024
162 Medicare Part D claims for 129 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Amoxicillin-Clavulanate Potass16 claims
- Sulfamethoxazole-Trimethoprim14 claims
- Cephalexin13 claims
- Azithromycin11 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): 76.7 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
- Enloe Medical CenterChico, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nelson Concepcion De Guzman among 17,696 internal medicine physician records in California
Nelson Concepcion De Guzman, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1981 · median 2004 among the 11,065 with a school on file
- Record last updated2026 · 61% 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 California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
38 internal medicine physician records list a practice address in Redding
They are 38 of the 3,572 NPPES records with a practice address in Redding, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Redding → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Lawrence Bratt, MDRedding, CA 960021811931793
- Maria Gove, MDRedding, CA 960021902845894
- Brian Hearney, MDRedding, CA 960021962484626
- Elaine Hearney, MDRedding, CA 960021609859792
- Brandon Penn, D.O.Redding, CA 960021295919504
- Corsini Templado, M.D.Redding, CA 960021033195821
- Khin Aung, M.DRedding, CA 960011154732154
- Louis Bernstein, M.D.Redding, CA 960011780899591
Common questions
What is Nelson Concepcion De Guzman, MD's NPI number?
Nelson Concepcion De Guzman, MD's National Provider Identifier (NPI) is 1982680781, issued on Dec 22, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Nelson Concepcion De Guzman, MD located?
The NPPES record lists a practice address at 351 Hartnell Ave, Redding, CA, 96002. Phone: (530) 226-7524. Providers update this record themselves, so call before visiting.
How can I verify Nelson Concepcion De Guzman, MD's license?
NPPES lists California license number A73959, 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 Concepcion De Guzman, MD prescribe under Medicare Part D?
In 2024, Nelson Concepcion De Guzman, MD had 162 Medicare Part D claims for 129 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Nelson Concepcion De Guzman, MD's MIPS final score?
The 2023 MIPS final score is 76.7 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.