Int J Pediatr Otorhinolaryngol
Dr. Alexis Korostoff Rieber, MD
- Medicare services, 2024
- 99
- Medicare patients, 2024
- 64
- Part D claims, 2024
- 54
- Publications
- 3
- MIPS score, 2024
- 89
- Practice address
- 625 S Fair Oaks Ave, Pasadena, CA 91105
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Huntington Ambulatory Surgery Center - HOPD
Acute Care Hospital outpatient department · Pasadena, California
Find Dr. Rieber's professional email, personal email and mobile number
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Dr. Alexis Korostoff Rieber is an otolaryngologist in Pasadena, California
Dr. Rieber practices at Huntington Ambulatory Surgery Center - HOPD in Pasadena, California.
Dr. Rieber's NPI, 1659623429, was assigned on October 4, 2012. Dr. Rieber graduated from Keck School of Medicine of USC in 2011. Dr. Rieber holds California license A123143.
- NPI
- 1659623429NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7517238017
- NPI enumeration date
- October 4, 2012
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 41
- Medical school graduation
- 2011
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Alexis Korostoff Rieber practices at Huntington Ambulatory Surgery Center - HOPD in Pasadena, California
Dr. Rieber's primary practice is Huntington Ambulatory Surgery Center - HOPD, at 625 S Fair Oaks Ave, Pasadena, CA 91105.
- Huntington Ambulatory Surgery Center - HOPD625 S Fair Oaks Ave, Pasadena, CA 91105
Source: Dmand AI Affiliation Data
Dr. Alexis Korostoff Rieber is affiliated with 2 sites of care and 1 medical group
Dr. Rieber's primary practice is Huntington Ambulatory Surgery Center - HOPD in Pasadena, California. The medical group on file is Cedars-Sinai Medical Group. Dmand AI also links Dr. Rieber to 1 more group practice or clinic, named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Alexis Korostoff Rieber's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Rieber practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Huntington Ambulatory Surgery Center - HOPD | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Alexis Korostoff Rieber is one of 1,107 otolaryngologists in California
Otolaryngology is Dr. Rieber's primary specialty in the NPI Registry, under taxonomy code 207Y00000X. Dr. Rieber is board certified in otolaryngology by the American Board of Otolaryngology - Head and Neck Surgery. Dr. Rieber is licensed in California.
Specialties and state licenses
- Otolaryngology, CaliforniaPrimary
Clinical focus
Dmand AI lists chronic nasal allergies, ear eustachian tube disorders, hearing loss and impairment, swimmer's ear, tinnitus and vertigo among the conditions Dr. Rieber treats.
Otolaryngologists near Dr. Rieber
Counts of otolaryngologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Alexis Korostoff Rieber billed Medicare for 99 services in 2024
CMS data shows 99 Medicare services from Dr. Rieber across 3 procedure codes in 2024, for 64 Medicare patients. Medicare paid $5,128 for them. Every service was in an office.
Dr. Rieber's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2152024: 6570%
- Surgery
- 2023: 1092024: 3469%
Dr. Rieber compared with the California median for otolaryngologists, 2024
- Dr. Rieber
- California median
- Medicare services
- 99vs 66685% below
- Medicare patients
- 64vs 29678% below
- Part D claims
- 51vs 11857% below
Medians across 1,045 otolaryngologists in California with Dmand AI profiles that report each measure.
Dr. Rieber's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Rieber?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Rieber and other otolaryngologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Alexis Korostoff Rieber treated 64 Medicare patients in 2024, average age 74
CMS counts 64 Medicare patients who saw Dr. Rieber in 2024. The largest group is 65 to 74, with 30 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 0.87, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Rieber's median patient age at 8, with 44% women.
Dr. Rieber's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Rieber's Medicare patients by sex, 2024
- Women4063%
- Men2438%
Chronic conditions among Dr. Rieber's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis58%
- Depression30%
- Ischemic heart disease30%
- Mood disorders30%
- Asthma22%
- Diabetes20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Rieber's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 8
Patient panel by sex, all payers
- Women44%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Alexis Korostoff Rieber wrote 54 Medicare Part D claims in 2024
In 2024, Dr. Rieber wrote 54 Medicare Part D claims for 27 patients. 100% of them were for generic drugs. CMS names the drug for 51 of them, across 3 drugs with 11 or more claims each, at $951 in total drug cost. In 2022, CMS named 264 claims across 8 drugs.
Dr. Rieber's most prescribed drugs by claims, 2023
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 2642023: 5181%
Drugs named by CMS: 3 in 2023, 8 in 2022.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Alexis Korostoff Rieber scored 89 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. Rieber for performance year 2024, reported as part of a group. Dr. Rieber accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Rieber's MIPS scores, performance year 2024
- 89of 100Final score
- 84.8of 100Quality
- 99of 100Promoting Interoperability
- 40of 100Improvement Activities
- 73of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Alexis Korostoff Rieber has 3 publications on record
Dmand AI links 3 papers to Dr. Rieber, published from 2018 to 2019. The most frequent topics are Laryngoscopy. Dr. Rieber's most frequent co-authors are Edward Benjamin Penn, MD and Christopher T. Wootten, MD.
Topics Dr. Rieber writes about most
- Laryngoscopy
Dr. Rieber's most frequent co-authors
Recent publications by Dr. Rieber
See who Dr. Rieber researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Rieber works with, so you can find a warm path to the right otolaryngologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Alexis Korostoff Rieber received $5,989 in industry payments from 2016 to 2024
CMS Open Payments shows 94 general payments to Dr. Rieber from 19 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 78% of the total. Medtronic, Inc. paid the most, $1,641.
General payments to Dr. Rieber by program year, 2016 to 2024
General payments to Dr. Rieber by kind, 2016 to 2024
- Food and beverage$4,68878%
- Travel and lodging$90115%
- Consulting fees$4007%
Companies that paid Dr. Rieber the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Alexis Korostoff Rieber has 5 awards and honors on record
Dmand AI lists 5 awards for Dr. Rieber, most recently Alpha Omega Alpha Chapter President in 2011.
Awards and honors for Dr. Rieber
- 2011
- Alpha Omega Alpha Chapter President
- AOA Inductee 2011
- Graduate with Highest Distinction
- 2010
- Howard House ENT Scholar
- Janet M. Glasgow Achievement Award
Source: Dmand AI Professional Profile Data
Dr. Alexis Korostoff Rieber graduated from Keck School of Medicine of USC
Dr. Rieber graduated from Keck School of Medicine of USC in 2011. Dr. Rieber is a member of AOA, American Academy of Otolaryngic Allergy, NHS and ACS.
- Medical school
- Board certified in otolaryngology
Source: Dmand AI Professional Profile Data
Dr. Alexis Korostoff Rieber accepts plans from 13 insurance carriers
Dr. Rieber is in network with 13 carriers, including Elevance, Aetna and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Elevance
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- Alliant Health Plans
- +5 more carriersWith a free account
Plan types Dr. Rieber accepts, by number of carriers
- PPO9
- Medicare8
- HMO6
- EPO4
- POS4
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Alexis Korostoff Rieber's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Alexis Korostoff Rieber
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What is Dr. Alexis Korostoff Rieber's NPI number?
Dr. Alexis Korostoff Rieber's NPI number is 1659623429. It was assigned on October 4, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. Alexis Korostoff Rieber?
Dr. Alexis Korostoff Rieber is an otolaryngologist in Pasadena, California. The primary specialty in the NPI Registry is Otolaryngology Physician (taxonomy code 207Y00000X).
Where does Dr. Alexis Korostoff Rieber practice?
Dr. Rieber practices at 625 S Fair Oaks Ave, Pasadena, CA 91105. Dr. Rieber's primary practice is Huntington Ambulatory Surgery Center - HOPD in Pasadena, California. Dmand AI also links Dr. Rieber to 1 group practice or clinic.
What is Dr. Alexis Korostoff Rieber's medical license number?
Dr. Rieber holds California license A123143.
What medical group is Dr. Alexis Korostoff Rieber part of?
Dr. Rieber is linked to Cedars-Sinai Medical Group.
Does Dr. Alexis Korostoff Rieber accept Medicare?
Yes. CMS data shows Dr. Rieber billed Medicare for 99 services in 2024, and Dr. Rieber accepts Medicare assignment.
What is Dr. Alexis Korostoff Rieber's MIPS score?
Dr. Rieber's MIPS final score for performance year 2024 is 89 out of 100, reported as part of a group.
How many Medicare patients does Dr. Alexis Korostoff Rieber see?
CMS counts 64 Medicare patients who saw Dr. Rieber in 2024, with an average age of 74.
Is Dr. Alexis Korostoff Rieber board certified?
Yes. Dr. Rieber is board certified in otolaryngology by the American Board of Otolaryngology - Head and Neck Surgery.
What services does Dr. Alexis Korostoff Rieber bill to Medicare?
In 2024, Dr. Rieber's most billed Medicare services were office visit, established patient (99213), surgery: ear (69210) and office visit, established patient (99214).
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Where did Dr. Alexis Korostoff Rieber go to medical school?
Dr. Rieber graduated from Keck School of Medicine of USC in 2011.
What drugs does Dr. Alexis Korostoff Rieber prescribe most?
In 2023 Medicare Part D data, Dr. Rieber's most prescribed drugs by claims were Fluticasone Propionate, Azelastine HCl and Mupirocin.
Has Dr. Alexis Korostoff Rieber received payments from drug or device companies?
CMS Open Payments shows $5,989 in general payments to Dr. Rieber from 19 companies from 2016 to 2024. The largest total came from Medtronic, Inc.
How long has Dr. Alexis Korostoff Rieber been practicing?
Dr. Rieber graduated from medical school in 2011, 15 years ago.
Does Dr. Alexis Korostoff Rieber do research?
Dmand AI links 3 publications to Dr. Rieber, published from 2018 to 2019.
Who does Dr. Alexis Korostoff Rieber publish with?
Dr. Rieber's most frequent co-authors are Edward Benjamin Penn, MD (2 shared papers) and Christopher T. Wootten, MD (1 shared paper).
What insurance does Dr. Alexis Korostoff Rieber accept?
Dr. Rieber is in network with 13 carriers, including Elevance, Aetna and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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