Dr. Aaron Zachory Reyes, MD

  • San Diego, CA
  • Hospitalist
NPI1851854525PAC ID6204179278
Medicare services, 2024
250
Medicare patients, 2024
201
Part D claims, 2024
37
Publications
3
MIPS score, 2024
92
Practice address
200 W Arbor Dr, San Diego, CA 92103
Practice phone
Call (619) 543-6222
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

UCSD Hillcrest Medical Center

San Diego, California

See all 4 affiliations

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Dr. Aaron Zachory Reyes is a hospitalist in San Diego, California

Dr. Reyes practices at UCSD Hillcrest Medical Center in San Diego, California.

Dr. Reyes' NPI, 1851854525, was assigned on April 10, 2019. Dr. Reyes graduated from David Geffen School of Medicine at UCLA in 2019. Dr. Reyes holds California license A179549.

NPI and contact details
Medicare PAC ID
6204179278
NPI enumeration date
April 10, 2019
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(619) 543-6222
Professional email
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Personal email
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Mobile number
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Sex
Male
Estimated age
33
Medical school graduation
2019

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Aaron Zachory Reyes practices at UCSD Hillcrest Medical Center in San Diego, California

Dr. Reyes' primary practice is UCSD Hillcrest Medical Center, at 200 W Arbor Dr, San Diego, CA 92103 in San Diego County. The practice phone is (619) 543-6222.

  • UCSD Hillcrest Medical Center
    200 W Arbor Dr, San Diego, CA 92103 · San Diego CountyPhone(619) 543-6222

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dr. Aaron Zachory Reyes is affiliated with 2 sites of care and 2 medical groups

Dr. Reyes' primary practice is UCSD Hillcrest Medical Center in San Diego, California. Dr. Reyes is also affiliated with Hillcrest Medical Center. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Reyes to 1 more medical group, named with a free account.

See all 4 affiliations for Dr. Reyes

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Aaron Zachory Reyes' practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Reyes practices. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
UCSD Hillcrest Medical CenterAvailable with a free account
+1 more site and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Aaron Zachory Reyes is one of 3,186 hospitalists in California

Hospitalist is Dr. Reyes' primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Reyes is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Reyes' licenses on file in 2 states: California and New York.

Specialties and state licenses

  • Hospitalist, CaliforniaPrimaryLicense A179549 · 2022 to 2026 · taxonomy 208M00000X
  • New York license2020 to 2022

Clinical focus

Dmand AI lists gastrointestinal infection, kidney failure, pneumonia and respiratory infection, pulmonary embolism, sepsis and stroke among the conditions Dr. Reyes treats.

Hospitalists near Dr. Reyes

Counts of hospitalists 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. Aaron Zachory Reyes billed Medicare for 250 services in 2024

CMS data shows 250 Medicare services from Dr. Reyes across 6 procedure codes in 2024, for 201 Medicare patients. Medicare paid $26,837 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024250
Medicare patients201
Paid by Medicare$26,837
Procedure codes6

Dr. Reyes' Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 4132024: 25039%

Dr. Reyes compared with the California median for hospitalists, 2024

  • Dr. Reyes
  • California median
Medicare services
250vs 43042% below
Medicare patients
201vs 201Close to median
Part D claims
24vs 6965% below

Medians across 2,991 hospitalists in California with Dmand AI profiles that report each measure.

Dr. Reyes' 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.

See all procedures by Dr. Reyes

Need commercial claims for Dr. Reyes?

Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Reyes and other hospitalists in California.

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Aaron Zachory Reyes treated 201 Medicare patients in 2024, average age 71

CMS counts 201 Medicare patients who saw Dr. Reyes in 2024. The largest group is 65 to 74, with 78 patients. 75% of them have high blood pressure, and 73% have high cholesterol. 50% are also on Medicaid. Their average risk score is 4.10, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Reyes' median patient age at 65, with 39% women.

Medicare patients, 2024201
Average age71
Average risk score4.10
Also on Medicaid50%

Dr. Reyes' Medicare patients by age, 2024

Dr. Reyes' Medicare patients by sex, 2024

  • Women9949%
  • Men10251%

Chronic conditions among Dr. Reyes' Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol73%
  3. Chronic kidney disease56%
  4. Arthritis55%
  5. Diabetes47%
  6. Heart failure47%
  7. Ischemic heart disease47%
  8. Mood disorders47%

Share of Medicare patients with each condition. A patient can have several.

Dr. Reyes' patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 65

Patient panel by sex, all payers

  • Women39%
  • Men59%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Aaron Zachory Reyes wrote 37 Medicare Part D claims in 2024

In 2024, Dr. Reyes wrote 37 Medicare Part D claims for 16 patients. 76% of them were for generic drugs. CMS names the drug for 24 of them, across 2 drugs with 11 or more claims each, at $536 in total drug cost. In 2021, CMS named 63 claims across 4 drugs.

Part D claims, 202437
Drugs named by CMS2
Total drug cost$536
Part D patients16

Dr. Reyes' Part D claims by kind of drug, 2024

  • Generic28 claims76%
  • Brand-name and other9 claims24%

Dr. Reyes' most prescribed drugs by claims, 2022

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Dr. Reyes' Part D claims, 2024

  • Antibiotics35%13 of 37 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2021 to 2022

  • 2021
  • 2022
Claims for drugs CMS names
2021: 632022: 2462%

Drugs named by CMS: 2 in 2022, 4 in 2021.

See all prescribing by Dr. Reyes

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. Aaron Zachory Reyes scored 92 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 92 out of 100 for Dr. Reyes for performance year 2024, reported through an alternative payment model (APM). Dr. Reyes accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Dr. Reyes' MIPS scores, performance year 2024

  • 92of 100Final score
  • 90.4of 100Quality
  • 90of 100Promoting Interoperability
  • 40of 100Improvement Activities

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. Aaron Zachory Reyes has 3 publications on record

Dmand AI links 3 papers to Dr. Reyes, published from 2020 to 2022. The most frequent topics are SARS-CoV-2, Anti-Inflammatory Agents and Colchicine. Dr. Reyes has published most often in Ann Rheum Dis. Dr. Reyes' most frequent co-authors are Eliah S. Aronoff-Spencer, MD, PhD, Christopher A. Longhurst, MD and Michael Harris Pillinger, MD.

Papers3
Years published2020 to 2022

Dr. Reyes' papers by year, 2020 to 2022

Topics Dr. Reyes writes about most

  • SARS-CoV-2
  • Anti-Inflammatory Agents
  • Colchicine
  • COVID-19

Dr. Reyes' most frequent co-authors

Recent publications by Dr. Reyes

See all 3 publications and co-authors

See who Dr. Reyes researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Reyes works with, so you can find a warm path to the right hospitalists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Aaron Zachory Reyes received $118 in industry payments in 2023

CMS Open Payments shows 1 general payment to Dr. Reyes from 1 drug or device company in 2023. Food and beverage make up the largest share, 100% of the total. Paratek Pharmaceuticals, Inc. paid the most, $118.

Companies that paid Dr. Reyes the most, 2023 to 2023

Share is of all general payments to this clinician.

See all payments to Dr. Reyes

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Aaron Zachory Reyes graduated from David Geffen School of Medicine at UCLA

Dr. Reyes graduated from David Geffen School of Medicine at UCLA in 2019. Dr. Reyes is a member of AMA and Society of Hospital Medicine.

  1. Medical schoolDavid Geffen School of Medicine at UCLA
  2. Board certified in internal medicineAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Aaron Zachory Reyes accepts plans from 13 insurance carriers

Dr. Reyes is in network with 13 carriers, including Aetna, United Healthcare and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.

  • Aetna
  • United Healthcare
  • Blue Cross Blue Shield of Michigan
  • Elevance
  • HCSC
  • Blue Cross Blue Shield of Massachusetts
  • Molina
  • Alliant Health Plans
  • +5 more carriersWith a free account

Plan types Dr. Reyes accepts, by number of carriers

  1. PPO8
  2. HMO7
  3. Medicare6
  4. EPO4
  5. POS3

Source: Dmand AI Insurance Network Data

Sources for Dr. Aaron Zachory Reyes's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors 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-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Aaron Zachory Reyes

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Aaron Zachory Reyes' NPI number?

Dr. Aaron Zachory Reyes' NPI number is 1851854525. It was assigned on April 10, 2019, and it is active in the NPI Registry.

What kind of doctor is Dr. Aaron Zachory Reyes?

Dr. Aaron Zachory Reyes is a hospitalist in San Diego, California. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).

Where does Dr. Aaron Zachory Reyes practice?

Dr. Reyes practices at 200 W Arbor Dr, San Diego, CA 92103. Dr. Reyes' primary practice is UCSD Hillcrest Medical Center in San Diego, California. Dmand AI also links Dr. Reyes to 1 medical group.

What is Dr. Aaron Zachory Reyes' office phone number?

The practice phone on file for Dr. Reyes is (619) 543-6222.

What is Dr. Aaron Zachory Reyes' medical license number?

Dr. Reyes holds California license A179549, one of the licenses on file in 2 states.

Which states has Dr. Aaron Zachory Reyes been licensed in?

Dmand AI has state licenses on file for Dr. Reyes in California (2022 to 2026) and New York (2020 to 2022).

Which hospitals is Dr. Aaron Zachory Reyes affiliated with?

Dr. Reyes is affiliated with Hillcrest Medical Center.

What medical group is Dr. Aaron Zachory Reyes part of?

Dr. Reyes is linked to Southern California Permanente Medical Group. Dmand AI links Dr. Reyes to 1 more medical group.

Does Dr. Aaron Zachory Reyes accept Medicare?

Yes. CMS data shows Dr. Reyes billed Medicare for 250 services in 2024, and Dr. Reyes accepts Medicare assignment.

What is Dr. Aaron Zachory Reyes' MIPS score?

Dr. Reyes' MIPS final score for performance year 2024 is 92 out of 100, reported through an alternative payment model (APM).

Show 10 more questionsShow fewer questions

How many Medicare patients does Dr. Aaron Zachory Reyes see?

CMS counts 201 Medicare patients who saw Dr. Reyes in 2024, with an average age of 71.

Is Dr. Aaron Zachory Reyes board certified?

Yes. Dr. Reyes is board certified in internal medicine by the American Board of Internal Medicine.

What services does Dr. Aaron Zachory Reyes bill to Medicare?

In 2024, Dr. Reyes' most billed Medicare services were hospital inpatient care (99223), hospital inpatient care (99222) and hospital inpatient care (99232).

Where did Dr. Aaron Zachory Reyes go to medical school?

Dr. Reyes graduated from David Geffen School of Medicine at UCLA in 2019.

What drugs does Dr. Aaron Zachory Reyes prescribe most?

In 2022 Medicare Part D data, Dr. Reyes' most prescribed drugs by claims were Atorvastatin Calcium and Metoprolol Succinate.

Has Dr. Aaron Zachory Reyes received payments from drug or device companies?

CMS Open Payments shows $118 in general payments to Dr. Reyes from 1 company from 2023 to 2023. The largest total came from Paratek Pharmaceuticals, Inc.

How long has Dr. Aaron Zachory Reyes been practicing?

Dr. Reyes graduated from medical school in 2019, 7 years ago.

Does Dr. Aaron Zachory Reyes do research?

Dmand AI links 3 publications to Dr. Reyes, published from 2020 to 2022.

Who does Dr. Aaron Zachory Reyes publish with?

Dr. Reyes' most frequent co-authors are Eliah S. Aronoff-Spencer, MD, PhD (1 shared paper), Christopher A. Longhurst, MD (1 shared paper) and Michael Harris Pillinger, MD (1 shared paper).

What insurance does Dr. Aaron Zachory Reyes accept?

Dr. Reyes is in network with 13 carriers, including Aetna, United Healthcare and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.

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