Dr. Omar A. Mesarwi, MD

  • San Diego, CA
  • Sleep medicine (internal medicine) physician
NPI1245430032PAC ID5496937062
Medicare services, 2024
286
Medicare patients, 2024
141
Part D claims, 2024
21
Publications
28
MIPS score, 2024
91
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 3 affiliations

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Dr. Omar A. Mesarwi is a sleep medicine (internal medicine) physician in San Diego, California

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

Dr. Mesarwi's NPI, 1245430032, was assigned on July 20, 2007. Dr. Mesarwi graduated from UT Southwestern Medical Center in 2007. Dr. Mesarwi holds California license A144727.

NPI and contact details
Medicare PAC ID
5496937062
NPI enumeration date
July 20, 2007
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(619) 543-6222
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
45
Medical school graduation
2007

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

Dr. Omar A. Mesarwi practices at UCSD Hillcrest Medical Center in San Diego, California

Dr. Mesarwi's 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. Omar A. Mesarwi is affiliated with 2 sites of care and 1 medical group

Dr. Mesarwi's primary practice is UCSD Hillcrest Medical Center in San Diego, California. Dr. Mesarwi is also affiliated with Hillcrest Medical Center. The medical group on file is UC San Diego Health.

See all 3 affiliations for Dr. Mesarwi

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. Omar A. Mesarwi's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mesarwi 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 affiliated siteAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Omar A. Mesarwi is one of 115 sleep medicine (internal medicine) physicians in California

Internal medicine is Dr. Mesarwi's primary specialty in the NPI Registry, under taxonomy code 207RS0012X. The record also lists sleep medicine. Dr. Mesarwi is board certified in critical care medicine by the American Board of Internal Medicine. Dmand AI has Dr. Mesarwi's licenses on file in 3 states: California, Maryland and Texas.

Specialties and state licenses

  • Sleep medicine (internal medicine), CaliforniaPrimaryLicense A144727 · 2016 to 2026 · taxonomy 207RS0012X
  • Maryland license2012 to 2017
  • Texas license2009 to 2011

Sleep medicine (internal medicine) physicians near Dr. Mesarwi

Counts of sleep medicine (internal medicine) physicians 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. Omar A. Mesarwi billed Medicare for 286 services in 2024

CMS data shows 286 Medicare services from Dr. Mesarwi across 7 procedure codes in 2024, for 141 Medicare patients. Medicare paid $31,524 for them.

Medicare services, 2024286
Medicare patients141
Paid by Medicare$31,524
Procedure codes7

Dr. Mesarwi's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 1872024: 1986%
Tests and treatments
2023: 552024: 4813%
Other services
2023: 392024: 403%

Where Dr. Mesarwi's Medicare services took place, 2024

  • In an office16558%
  • In a facility12142%

Dr. Mesarwi compared with the California median for sleep medicine (internal medicine) physicians, 2024

  • Dr. Mesarwi
  • California median
Medicare services
286vs 45437% below
Medicare patients
141vs 25545% below
Part D claims
13vs 12490% below

Medians across 111 sleep medicine (internal medicine) physicians in California with Dmand AI profiles that report each measure.

Dr. Mesarwi'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.

See all procedures by Dr. Mesarwi

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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Mesarwi and other sleep medicine (internal medicine) physicians in California.

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

Dr. Omar A. Mesarwi treated 141 Medicare patients in 2024, average age 71

CMS counts 141 Medicare patients who saw Dr. Mesarwi in 2024. The largest group is 65 to 74, with 61 patients. 75% of them have high blood pressure, and 74% have high cholesterol. 33% are also on Medicaid. Their average risk score is 2.09, 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. Mesarwi's median patient age at 57, with 40% women.

Medicare patients, 2024141
Average age71
Average risk score2.09
Also on Medicaid33%

Dr. Mesarwi's Medicare patients by age, 2024

Dr. Mesarwi's Medicare patients by sex, 2024

  • Women7251%
  • Men6949%

Chronic conditions among Dr. Mesarwi's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol74%
  3. Arthritis44%
  4. Mood disorders43%
  5. Depression38%
  6. Diabetes35%
  7. Chronic kidney disease34%
  8. Ischemic heart disease31%

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

Dr. Mesarwi's patients across all payers

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

Patient panel by age, all payers

Median age 57

Patient panel by sex, all payers

  • Women40%
  • Men59%

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

Dr. Omar A. Mesarwi wrote 21 Medicare Part D claims in 2024

In 2024, Dr. Mesarwi wrote 21 Medicare Part D claims. 100% of them were for generic drugs. CMS names the drug for 13 of them, across 1 drug with 11 or more claims each, at $899 in total drug cost. In 2020, CMS named 11 claims across 1 drug.

Part D claims, 202421
Drugs named by CMS1
Total drug cost$899

Dr. Mesarwi's most prescribed drugs by claims, 2024

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, 2020 to 2024

  • 2020
  • 2024
Claims for drugs CMS names
2020: 112024: 1318%

Drugs named by CMS: 1 in 2024, 1 in 2020.

See all prescribing by Dr. Mesarwi

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. Omar A. Mesarwi scored 91 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 91 out of 100 for Dr. Mesarwi for performance year 2024, reported as part of a group. Dr. Mesarwi accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Mesarwi as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Dr. Mesarwi's MIPS scores, performance year 2024

  • 91of 100Final score
  • 84.1of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 74of 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. Omar A. Mesarwi has 28 publications on record

Dmand AI links 28 papers to Dr. Mesarwi, published from 2014 to 2024. 2022 was the busiest year, with 3. The most frequent topics are Sleep Apnea, Obstructive, Hypoxia and Disease Models, Animal. Dr. Mesarwi has published most often in J Clin Sleep Med. Dr. Mesarwi's most frequent co-authors are Atul Malhotra, MD, Vsevolod Y. Polotsky, MD and Luu Van Pham, MD.

Papers28
Years published2014 to 2024

Dr. Mesarwi's papers by year, 2014 to 2024

Topics Dr. Mesarwi writes about most

  • Sleep Apnea, Obstructive
  • Hypoxia
  • Disease Models, Animal
  • Non-alcoholic Fatty Liver Disease
  • Hypertension
  • Mice, Inbred C57BL
  • Sleep Apnea Syndromes
  • Altitude

Dr. Mesarwi's most frequent co-authors

Recent publications by Dr. Mesarwi

See all 28 publications and co-authors

See who Dr. Mesarwi researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Mesarwi works with, so you can find a warm path to the right sleep medicine (internal medicine) physicians.

How network discovery works

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

Dr. Omar A. Mesarwi received $412 in industry payments from 2019 to 2023

CMS Open Payments shows 4 general payments to Dr. Mesarwi from 4 drug and device companies from 2019 to 2023. Food and beverage make up the largest share, 77% of the total. ZOLL Respicardia, Inc. paid the most, $141.

General payments to Dr. Mesarwi by program year, 2019 to 2023

General payments to Dr. Mesarwi by kind, 2019 to 2023

$412in total
  • Food and beverage$31777%
  • Education$9523%

Companies that paid Dr. Mesarwi the most, 2019 to 2023

Share is of all general payments to this clinician.

See all payments to Dr. Mesarwi

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

Dr. Omar A. Mesarwi graduated from UT Southwestern Medical Center

Dr. Mesarwi graduated from UT Southwestern Medical Center in 2007. Dr. Mesarwi is a member of AASM, ACCP and ATS.

  1. Medical schoolUT Southwestern Medical Center
  2. Board certified in critical care medicineAmerican Board of Internal Medicine
  3. Board certified in pulmonary diseaseAmerican Board of Internal Medicine
  4. Board certified in sleep medicineAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Omar A. Mesarwi accepts plans from 15 insurance carriers

Dr. Mesarwi is in network with 15 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and Elevance. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.

  • Blue Cross Blue Shield of Michigan
  • United Healthcare
  • Elevance
  • HCSC
  • Aetna
  • Blue Cross Blue Shield of Massachusetts
  • Molina
  • Regence Health Plans
  • +7 more carriersWith a free account

Plan types Dr. Mesarwi accepts, by number of carriers

  1. PPO9
  2. HMO7
  3. Medicare7
  4. EPO3
  5. POS2
  6. Medicaid1

Source: Dmand AI Insurance Network Data

Sources for Dr. Omar A. Mesarwi'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. Omar A. Mesarwi

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. Omar A. Mesarwi's NPI number?

Dr. Omar A. Mesarwi's NPI number is 1245430032. It was assigned on July 20, 2007, and it is active in the NPI Registry.

What kind of doctor is Dr. Omar A. Mesarwi?

Dr. Omar A. Mesarwi is a sleep medicine (internal medicine) physician in San Diego, California. The primary specialty in the NPI Registry is Sleep Medicine (Internal Medicine) Physician (taxonomy code 207RS0012X).

Where does Dr. Omar A. Mesarwi practice?

Dr. Mesarwi practices at 200 W Arbor Dr, San Diego, CA 92103. Dr. Mesarwi's primary practice is UCSD Hillcrest Medical Center in San Diego, California.

What is Dr. Omar A. Mesarwi's office phone number?

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

What is Dr. Omar A. Mesarwi's medical license number?

Dr. Mesarwi holds California license A144727, one of the licenses on file in 3 states.

Which states has Dr. Omar A. Mesarwi been licensed in?

Dmand AI has state licenses on file for Dr. Mesarwi in California (2016 to 2026), Maryland (2012 to 2017) and Texas (2009 to 2011).

Which hospitals is Dr. Omar A. Mesarwi affiliated with?

Dr. Mesarwi is affiliated with Hillcrest Medical Center.

What medical group is Dr. Omar A. Mesarwi part of?

Dr. Mesarwi is linked to UC San Diego Health.

Does Dr. Omar A. Mesarwi accept Medicare?

Yes. CMS data shows Dr. Mesarwi billed Medicare for 286 services in 2024, and Dr. Mesarwi accepts Medicare assignment.

Does Dr. Omar A. Mesarwi offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Mesarwi as offering telehealth services.

Show 11 more questionsShow fewer questions

What is Dr. Omar A. Mesarwi's MIPS score?

Dr. Mesarwi's MIPS final score for performance year 2024 is 91 out of 100, reported as part of a group.

How many Medicare patients does Dr. Omar A. Mesarwi see?

CMS counts 141 Medicare patients who saw Dr. Mesarwi in 2024, with an average age of 71.

Is Dr. Omar A. Mesarwi board certified?

Yes. Dr. Mesarwi is board certified in critical care medicine by the American Board of Internal Medicine.

What services does Dr. Omar A. Mesarwi bill to Medicare?

In 2024, Dr. Mesarwi's most billed Medicare services were critical care (99291), office visit, established patient (99214) and nerve and brain test (95806).

Where did Dr. Omar A. Mesarwi go to medical school?

Dr. Mesarwi graduated from UT Southwestern Medical Center in 2007.

What drugs does Dr. Omar A. Mesarwi prescribe most?

In 2024 Medicare Part D data, Dr. Mesarwi's most prescribed drugs by claims were Eszopiclone.

Has Dr. Omar A. Mesarwi received payments from drug or device companies?

CMS Open Payments shows $412 in general payments to Dr. Mesarwi from 4 companies from 2019 to 2023. The largest total came from ZOLL Respicardia, Inc.

How long has Dr. Omar A. Mesarwi been practicing?

Dr. Mesarwi graduated from medical school in 2007, 19 years ago.

Does Dr. Omar A. Mesarwi do research?

Dmand AI links 28 publications to Dr. Mesarwi, published from 2014 to 2024.

Who does Dr. Omar A. Mesarwi publish with?

Dr. Mesarwi's most frequent co-authors are Atul Malhotra, MD (10 shared papers), Vsevolod Y. Polotsky, MD (6 shared papers) and Luu Van Pham, MD (3 shared papers).

What insurance does Dr. Omar A. Mesarwi accept?

Dr. Mesarwi is in network with 15 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and Elevance. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.

Selling to internal medicine practices?

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