Dr. Nicolas E. Nassar, MD

  • Sylmar, CA
  • Pulmonologist
NPI1104851609PAC ID0446155089
Medicare services, 2024
10,581
Medicare patients, 2024
597
Part D claims, 2024
1,211
Publications
2
MIPS score, 2024
83
Practice address
14122 Hubbard Street, Sylmar, CA 91342
Practice phone
Call (818) 361-0191
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

The Grove Post-Acute Care Center

Skilled Nursing Facility · Sylmar, California

See all 4 affiliations

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Dr. Nicolas E. Nassar is a pulmonologist in Sylmar, California

Dr. Nassar practices at The Grove Post-Acute Care Center in Sylmar, California.

Dr. Nassar's NPI, 1104851609, was assigned on July 12, 2006. Dr. Nassar graduated from American University of Beirut Faculty of Medicine in 1995. Dr. Nassar holds California license A76218.

NPI and contact details
Medicare PAC ID
0446155089
NPI enumeration date
July 12, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(818) 361-0191
Professional email
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Personal email
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Mobile number
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Sex
Male
Estimated age
57
Medical school graduation
1995

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

Dr. Nicolas E. Nassar practices at The Grove Post-Acute Care Center in Sylmar, California

Dr. Nassar's primary practice is The Grove Post-Acute Care Center, at 14122 Hubbard Street, Sylmar, CA 91342 in Los Angeles County. The practice phone is (818) 361-0191.

  • The Grove Post-Acute Care Center
    14122 Hubbard Street, Sylmar, CA 91342 · Los Angeles CountyPhone(818) 361-0191

Source: Dmand AI Affiliation Data

Dr. Nicolas E. Nassar is affiliated with 4 sites of care

Dr. Nassar's primary practice is The Grove Post-Acute Care Center in Sylmar, California. Dr. Nassar is also affiliated with Dignity Health - St. Bernardine Medical Center. Dmand AI also links Dr. Nassar to 2 more hospitals, each named with a free account. Dr. Nassar's employer is on file too: a skilled nursing facility.

See all 4 affiliations for Dr. Nassar

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Nicolas E. Nassar's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nassar practices, 4 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
The Grove Post-Acute Care CenterAvailable with a free account
+3 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Nicolas E. Nassar is one of 1,339 pulmonologists in California

Pulmonary disease is Dr. Nassar's primary specialty in the NPI Registry, under taxonomy code 207RP1001X. Dr. Nassar is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Nassar's licenses on file in 5 states: California, Maryland, Pennsylvania, Minnesota and Alabama.

Specialties and state licenses

  • Pulmonary disease, CaliforniaPrimaryLicense A76218 · 2001 to 2026 · taxonomy 207RP1001X
  • Maryland license2002 to 2003
  • Pennsylvania license1999 to 2002
  • Minnesota license2001
  • Alabama license1999

Clinical focus

Dmand AI lists asthma, chronic obstructive pulmonary disease (COPD), chronic respiratory failure and pleural effusion among the conditions Dr. Nassar treats.

Pulmonologists near Dr. Nassar

Counts of pulmonologists with a Dmand AI profile, by place and practice. Each opens the list.

1,339pulmonologists in California
4pulmonologists in Sylmar

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Nicolas E. Nassar billed Medicare for 10,581 services in 2024

CMS data shows 10,581 Medicare services from Dr. Nassar across 8 procedure codes in 2024, for 597 Medicare patients. Medicare paid $737,615 for them.

Medicare services, 202410,581
Medicare patients597
Paid by Medicare$737,615
Procedure codes8

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

  • 2023
  • 2024
Office and hospital visits
2023: 6,3772024: 10,58166%

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

  • In an office9,79993%
  • In a facility7827%

Dr. Nassar compared with the California median for pulmonologists, 2024

  • Dr. Nassar
  • California median
Medicare services
10,581vs 64916.3 times
Medicare patients
597vs 2722.2 times
Part D claims
1,131vs 4212.7 times

Medians across 1,263 pulmonologists in California with Dmand AI profiles that report each measure.

Dr. Nassar'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. Nassar

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

Dr. Nicolas E. Nassar treated 597 Medicare patients in 2024, average age 73

CMS counts 597 Medicare patients who saw Dr. Nassar in 2024. The largest group is 65 to 74, with 254 patients. 75% of them have high blood pressure, and 69% have high cholesterol. 92% are also on Medicaid. Their average risk score is 4.01, 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. Nassar's median patient age at 69, with 47% women.

Medicare patients, 2024597
Average age73
Average risk score4.01
Also on Medicaid92%

Dr. Nassar's Medicare patients by age, 2024

Dr. Nassar's Medicare patients by sex, 2024

  • Women30852%
  • Men28948%

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

  1. High blood pressure75%
  2. High cholesterol69%
  3. COPD66%
  4. Mood disorders62%
  5. Diabetes61%
  6. Heart failure60%
  7. Anxiety57%
  8. Depression54%

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

Dr. Nassar's patients across all payers

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

Patient panel by age, all payers

Median age 69

Patient panel by sex, all payers

  • Women47%
  • Men53%

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

Dr. Nicolas E. Nassar wrote 1,211 Medicare Part D claims in 2024

In 2024, Dr. Nassar wrote 1,211 Medicare Part D claims for 177 patients. 69% of them were for generic drugs. CMS names the drug for 1,131 of them, across 27 drugs with 11 or more claims each, at $101,425 in total drug cost. In 2023, CMS named 1,006 claims across 19 drugs.

Part D claims, 20241,211
Drugs named by CMS27
Total drug cost$101,425
Part D patients177

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

  • Generic834 claims69%
  • Brand-name377 claims31%

Dr. Nassar'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.

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

  • Antibiotics3%41 of 1,211 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, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 1,0062024: 1,13112%

Drugs named by CMS: 27 in 2024, 19 in 2023.

See all prescribing by Dr. Nassar

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. Nicolas E. Nassar scored 83 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 83 out of 100 for Dr. Nassar for performance year 2024, reported individually. Dr. Nassar accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Dr. Nassar's MIPS scores, performance year 2024

  • 83of 100Final score
  • 100of 100Quality
  • 40of 100Improvement Activities
  • 10of 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

For MedTech and pharma teams

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Dr. Nicolas E. Nassar has 2 publications on record

Dmand AI links 2 papers to Dr. Nassar, published from 2013 to 2018.

Papers2
Years published2013 to 2018

Recent publications by Dr. Nassar

See all 2 publications and co-authors

See who Dr. Nassar researches with

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

How network discovery works

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

Dr. Nicolas E. Nassar received $32 in industry payments from 2017 to 2022

CMS Open Payments shows 2 general payments to Dr. Nassar from 2 drug and device companies from 2017 to 2022. Food and beverage make up the largest share, 57% of the total. Astellas Pharma US Inc paid the most, $18.

General payments to Dr. Nassar by program year, 2017 to 2022

General payments to Dr. Nassar by kind, 2017 to 2022

$32in total
  • Food and beverage$1857%
  • Education$1443%

Companies that paid Dr. Nassar the most, 2017 to 2022

Share is of all general payments to this clinician.

See all payments to Dr. Nassar

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

Dr. Nicolas E. Nassar graduated from American University of Beirut Faculty of Medicine

Dr. Nassar graduated from American University of Beirut Faculty of Medicine in 1995.

  1. Medical schoolAmerican University of Beirut Faculty of Medicine
  2. Board certified in internal medicineAmerican Board of Internal Medicine
  3. Board certified in pulmonary diseaseAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Nicolas E. Nassar accepts plans from 10 insurance carriers

Dr. Nassar is in network with 10 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.

Plan types Dr. Nassar accepts, by number of carriers

  1. Medicare9
  2. HMO5
  3. PPO5
  4. POS3
  5. Medicaid2
  6. EPO1

Source: Dmand AI Insurance Network Data

Sources for Dr. Nicolas E. Nassar'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 phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand 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. Nicolas E. Nassar

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. Nicolas E. Nassar's NPI number?

Dr. Nicolas E. Nassar's NPI number is 1104851609. It was assigned on July 12, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Nicolas E. Nassar?

Dr. Nicolas E. Nassar is a pulmonologist in Sylmar, California. The primary specialty in the NPI Registry is Pulmonary Disease Physician (taxonomy code 207RP1001X).

Where does Dr. Nicolas E. Nassar practice?

Dr. Nassar practices at 14122 Hubbard Street, Sylmar, CA 91342. Dr. Nassar's primary practice is The Grove Post-Acute Care Center in Sylmar, California. Dmand AI also links Dr. Nassar to 2 hospitals.

What is Dr. Nicolas E. Nassar's office phone number?

The practice phone on file for Dr. Nassar is (818) 361-0191.

What is Dr. Nicolas E. Nassar's medical license number?

Dr. Nassar holds California license A76218, one of the licenses on file in 5 states.

Which states has Dr. Nicolas E. Nassar been licensed in?

Dmand AI has state licenses on file for Dr. Nassar in California (2001 to 2026), Maryland (2002 to 2003), Pennsylvania (1999 to 2002), Minnesota (2001) and Alabama (1999).

Which hospitals is Dr. Nicolas E. Nassar affiliated with?

Dr. Nassar is affiliated with Dignity Health - St. Bernardine Medical Center. Dmand AI links Dr. Nassar to 2 more hospitals.

Does Dr. Nicolas E. Nassar accept Medicare?

Yes. CMS data shows Dr. Nassar billed Medicare for 10,581 services in 2024, and Dr. Nassar accepts Medicare assignment.

What is Dr. Nicolas E. Nassar's MIPS score?

Dr. Nassar's MIPS final score for performance year 2024 is 83 out of 100, reported individually.

How many Medicare patients does Dr. Nicolas E. Nassar see?

CMS counts 597 Medicare patients who saw Dr. Nassar in 2024, with an average age of 73.

Show 8 more questionsShow fewer questions

Is Dr. Nicolas E. Nassar board certified?

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

What services does Dr. Nicolas E. Nassar bill to Medicare?

In 2024, Dr. Nassar's most billed Medicare services were nursing facility care (99308), nursing facility care (99309) and hospital inpatient care (99233).

Where did Dr. Nicolas E. Nassar go to medical school?

Dr. Nassar graduated from American University of Beirut Faculty of Medicine in 1995.

What drugs does Dr. Nicolas E. Nassar prescribe most?

In 2024 Medicare Part D data, Dr. Nassar's most prescribed drugs by claims were Albuterol Sulfate Hfa, Ipratropium-Albuterol and Chlorhexidine Gluconate.

Has Dr. Nicolas E. Nassar received payments from drug or device companies?

CMS Open Payments shows $32 in general payments to Dr. Nassar from 2 companies from 2017 to 2022. The largest total came from Astellas Pharma US Inc.

How long has Dr. Nicolas E. Nassar been practicing?

Dr. Nassar graduated from medical school in 1995, 31 years ago.

Does Dr. Nicolas E. Nassar do research?

Dmand AI links 2 publications to Dr. Nassar, published from 2013 to 2018.

What insurance does Dr. Nicolas E. Nassar accept?

Dr. Nassar is in network with 10 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.

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