Gunter Klaus Rieg, M.D.
Infectious Disease Physician · Long Beach, CA
Gunter Klaus Rieg, M.D. is an infectious disease physician with a practice address in Long Beach, California, and NPI 1528096138, issued on Jun 30, 2006. Check the license (California I04192, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gunter Klaus Rieg
- Credential
- M.D.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- I04192 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1333 Chestnut Ave, Long Beach, CA 90813
- Phone
- (562) 599-8601
- Enumerated
- Jun 30, 2006
- Record last updated
- Dec 6, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (562) 218-0853
- Medicare enrollment
- Enrolled (PECOS I20040601001427); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 1,119 in California → Look up another NPI →
Also registered at 1333 Chestnut Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ashlee AbramLicensed Vocational Nurse1457246654
- Shelley Agrusa, RNAmbulatory Care Registered Nurse1457881252
- Justine Alvarez, VN718488Licensed Vocational Nurse1598445348
- Katherine Alvarez, RNAmbulatory Care Registered Nurse1457067035
- Guadalupe Ambriz, LCSWClinical Social Worker1922261288
- Ma.lourdes Aquino, RNAmbulatory Care Registered Nurse1881123198
Verify Gunter Klaus Rieg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license I04192Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
21% more Medicare Part D claims than the average infectious disease physician in 2024
834 Medicare Part D claims for 171 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. 23 claims were for opioids.
Most prescribed
- Cefpodoxime Proxetil52 claims
- Fluconazole51 claims
- Ciprofloxacin Hcl43 claims
- Amoxicillin-Clavulanate Potass41 claims
- Biktarvy38 claims
- Doxycycline Monohydrate35 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.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupHarbor City, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gunter Klaus Rieg among 1,119 infectious disease physician records in California
Gunter Klaus Rieg, M.D. is one of 1,119 infectious disease 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 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 54% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1993 · median 2003 among the 735 with a school on file
- Record last updated2021 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in California
There are 1,119 infectious disease physician records in California.
All 1,119 in California → Every provider in Long Beach → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Marcia Alcouloumre Senteno, MDLong Beach, CA 908131770502650
- Chester Choi, M.D.Long Beach, CA 908131730197344
- Jerome De Vente, MDLong Beach, CA 908131548208242
- Caroline Koan, M.D.Long Beach, CA 908131205298767
- Benjamin Montoya, MDLong Beach, CA 908131588701619
- Rithika Ramakrishnan, MDLong Beach, CA 908131316476484
- Stefan Schneider, MDLong Beach, CA 908131104849108
- Henry Su, M.D.Long Beach, CA 908131902033913
Common questions
What is Gunter Klaus Rieg, M.D.'s NPI number?
Gunter Klaus Rieg, M.D.'s National Provider Identifier (NPI) is 1528096138, issued on Jun 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gunter Klaus Rieg, M.D. located?
The NPPES record lists a practice address at 1333 Chestnut Ave, Long Beach, CA, 90813. Phone: (562) 599-8601. Providers update this record themselves, so call before visiting.
How can I verify Gunter Klaus Rieg, M.D.'s license?
NPPES lists California license number I04192, 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 Gunter Klaus Rieg, M.D. prescribe under Medicare Part D?
In 2024, Gunter Klaus Rieg, M.D. had 834 Medicare Part D claims for 171 beneficiaries; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.
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.