Dr. Mark Winston Smith, MD

  • Lancaster, CA
  • Pulmonologist
NPI1326111790PAC ID1658465695
Medicare services, 2024
227
Medicare patients, 2024
110
Part D claims, 2024
23
Publications
33
Hospital affiliations
2
Practice address
1600 W Ave J, Lancaster, CA 93534
Practice phone
Call (661) 949-5500
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Antelope Valley Medical Center

Hospital · Lancaster, California

See all 13 affiliations

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Dr. Mark Winston Smith is a pulmonologist in Lancaster, California

Dr. Smith practices at Antelope Valley Medical Center in Lancaster, California, part of Antelope Valley Healthcare District.

Dr. Smith's NPI, 1326111790, was assigned on November 15, 2006. Dr. Smith graduated from Keck School of Medicine of USC in 2005. Dr. Smith holds Texas license R3217.

NPI and contact details
Medicare PAC ID
1658465695
NPI enumeration date
November 15, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(661) 949-5500
Professional email
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Personal email
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Mobile number
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Sex
Male
Estimated age
47
Medical school graduation
2005

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

Dr. Mark Winston Smith practices at Antelope Valley Medical Center in Lancaster, California

Dr. Smith's primary practice is Antelope Valley Medical Center, at 1600 W Ave J, Lancaster, CA 93534 in Los Angeles County. The practice phone is (661) 949-5500.

Source: Dmand AI Affiliation Data

Dr. Mark Winston Smith is affiliated with 6 sites of care and 7 medical groups

Dr. Smith's primary practice is Antelope Valley Medical Center in Lancaster, California, part of Antelope Valley Healthcare District. Dr. Smith is also affiliated with CHRISTUS Mother Frances Hospital - Tyler. The medical group on file is CCU Intensivists. Dmand AI also links Dr. Smith to 6 more medical groups and 4 group practices and clinics, each named with a free account.

See all 13 affiliations for Dr. Smith

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

Dmand AI tracks the EHR system at Dr. Mark Winston Smith's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Smith practices, 6 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Antelope Valley Medical CenterAvailable with a free account
+5 more sites and 6 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Mark Winston Smith is one of 1,339 pulmonologists in California

Pulmonary disease is Dr. Smith's primary specialty in the NPI Registry, under taxonomy code 207RP1001X. Dr. Smith is board certified in critical care medicine by the American Board of Internal Medicine. Dmand AI has Dr. Smith's licenses on file in 15 states: Texas, South Dakota, California, Hawaii, Arizona, Washington, Idaho, Michigan, Florida, Iowa, Illinois, Maryland, New Jersey, New York and Oregon.

Specialties and state licenses

  • Pulmonary disease, TexasPrimaryLicense R3217 · 2017 to 2027 · taxonomy 207RP1001X
  • South Dakota licenseSince 2023
  • Internal medicine, CaliforniaLicense A96979 · 2006 to 2026 · taxonomy 207R00000X
  • Hawaii license2008 to 2026
  • Arizona license2017 to 2025
  • Washington license2015 to 2025
  • Idaho license2020 to 2024
  • Michigan license2016 to 2024
  • Florida license2008 to 2023
  • Iowa license2015 to 2023
  • Illinois license2009 to 2023
  • Maryland license2016 to 2023
  • New Jersey license2017 to 2023
  • New York license2011 to 2023
  • Oregon license2017 to 2023

Pulmonologists near Dr. Smith

Counts of pulmonologists 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. Mark Winston Smith billed Medicare for 227 services in 2024

CMS data shows 227 Medicare services from Dr. Smith across 1 procedure code in 2024, for 110 Medicare patients. Medicare paid $39,202 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024227
Medicare patients110
Paid by Medicare$39,202
Procedure codes1

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

  • 2023
  • 2024
Office and hospital visits
2023: 1582024: 22744%
Imaging
2023: 142024: 0100%
Surgery
2023: 112024: 0100%

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

  • Dr. Smith
  • California median
Medicare services
227vs 64965% below
Medicare patients
110vs 27260% below
Part D claims
13vs 42197% below

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

Dr. Smith'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. Smith

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

Dr. Mark Winston Smith treated 110 Medicare patients in 2024, average age 72

CMS counts 110 Medicare patients who saw Dr. Smith in 2024. The largest group is 65 to 74, with 51 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 53% are also on Medicaid. Their average risk score is 3.00, 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. Smith's median patient age at 67, with 52% women.

Medicare patients, 2024110
Average age72
Average risk score3.00
Also on Medicaid53%

Dr. Smith's Medicare patients by age, 2024

Dr. Smith's Medicare patients by sex, 2024

  • Women6155%
  • Men4945%

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

  1. High blood pressure75%
  2. High cholesterol75%
  3. Diabetes58%
  4. Arthritis55%
  5. COPD51%
  6. Heart failure51%
  7. Ischemic heart disease49%
  8. Mood disorders45%

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

Dr. Smith's patients across all payers

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

Patient panel by age, all payers

Median age 67

Patient panel by sex, all payers

  • Women52%
  • Men48%

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

Dr. Mark Winston Smith wrote 23 Medicare Part D claims in 2024

In 2024, Dr. Smith wrote 23 Medicare Part D claims. 96% of them were for generic drugs. CMS names the drug for 13 of them, across 1 drug with 11 or more claims each, at $131 in total drug cost. In 2023, CMS named 11 claims across 1 drug.

Part D claims, 202423
Drugs named by CMS1
Total drug cost$131

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

  • Generic22 claims96%
  • Brand-name and other1 claims4%

Dr. Smith'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, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 112024: 1318%

Drugs named by CMS: 1 in 2024, 1 in 2023.

See all prescribing by Dr. Smith

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

How Dr. Mark Winston Smith takes part in Medicare

Dr. Smith accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Dr. Mark Winston Smith has 33 publications on record

Dmand AI links 33 papers to Dr. Smith, published from 2007 to 2012. 2010 was the busiest year, with 4. The most frequent topics are United States Department of Veterans Affairs, Health Care Costs and Cost-Benefit Analysis. Dr. Smith has published most often in Clin J Am Soc Nephrol. Dr. Smith's most frequent co-authors are Glenn Matthew Chertow, MD, Kevin W. Finkel, MD and Michael J. Germain, MD.

Papers33
Years published2007 to 2012

Dr. Smith's papers by year, 2007 to 2012

Topics Dr. Smith writes about most

  • United States Department of Veterans Affairs
  • Health Care Costs
  • Cost-Benefit Analysis
  • Stress Disorders, Post-Traumatic
  • Health Services Research
  • Veterans
  • Acute Kidney Injury
  • Hospitals, Veterans

Dr. Smith's most frequent co-authors

Recent publications by Dr. Smith

See all 33 publications and co-authors

See who Dr. Smith researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Smith 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. Mark Winston Smith received $412 in industry payments from 2019 to 2024

CMS Open Payments shows 21 general payments to Dr. Smith from 11 drug and device companies from 2019 to 2024. Food and beverage make up the largest share, 100% of the total. Ironshore Pharmaceuticals Inc. paid the most, $98.

General payments to Dr. Smith by program year, 2019 to 2024

Companies that paid Dr. Smith the most, 2019 to 2024

Share is of all general payments to this clinician.

See all payments to Dr. Smith

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

Dr. Mark Winston Smith graduated from Keck School of Medicine of USC

Dr. Smith graduated from Keck School of Medicine of USC in 2005.

  1. Medical schoolKeck School of Medicine of USC
  2. Board certified in critical care medicineAmerican Board of Internal Medicine
  3. Board certified in internal medicineAmerican Board of Internal Medicine
  4. Board certified in pulmonary diseaseAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Mark Winston Smith accepts plans from 22 insurance carriers

Dr. Smith is in network with 22 carriers, including Elevance, Blue Cross Blue Shield of Michigan and United Healthcare. HMO plans come from the most carriers, 14. Check the plan with the practice before a visit.

Plan types Dr. Smith accepts, by number of carriers

  1. HMO14
  2. PPO12
  3. Medicare10
  4. POS4
  5. EPO3
  6. Medicaid2

Source: Dmand AI Insurance Network Data

Sources for Dr. Mark Winston Smith'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)
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. Mark Winston Smith

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. Mark Winston Smith's NPI number?

Dr. Mark Winston Smith's NPI number is 1326111790. It was assigned on November 15, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Mark Winston Smith?

Dr. Mark Winston Smith is a pulmonologist in Lancaster, California. The primary specialty in the NPI Registry is Pulmonary Disease Physician (taxonomy code 207RP1001X).

Where does Dr. Mark Winston Smith practice?

Dr. Smith practices at 1600 W Ave J, Lancaster, CA 93534. Dr. Smith's primary practice is Antelope Valley Medical Center in Lancaster, California, part of Antelope Valley Healthcare District. Dmand AI also links Dr. Smith to 6 medical groups and 4 group practices and clinics.

What is Dr. Mark Winston Smith's office phone number?

The practice phone on file for Dr. Smith is (661) 949-5500.

What is Dr. Mark Winston Smith's medical license number?

Dr. Smith holds Texas license R3217, one of the licenses on file in 15 states.

Which states has Dr. Mark Winston Smith been licensed in?

Dmand AI has state licenses on file for Dr. Smith in Texas (2017 to 2027), South Dakota (since 2023), California (2006 to 2026), Hawaii (2008 to 2026), Arizona (2017 to 2025), Washington (2015 to 2025), Idaho (2020 to 2024), Michigan (2016 to 2024), Florida (2008 to 2023), Iowa (2015 to 2023), Illinois (2009 to 2023), Maryland (2016 to 2023), New Jersey (2017 to 2023), New York (2011 to 2023) and Oregon (2017 to 2023).

Which hospitals is Dr. Mark Winston Smith affiliated with?

Dr. Smith practices at Antelope Valley Medical Center in Lancaster, California. Dr. Smith is also affiliated with CHRISTUS Mother Frances Hospital - Tyler.

What medical group is Dr. Mark Winston Smith part of?

Dr. Smith is linked to CCU Intensivists. Dmand AI links Dr. Smith to 6 more medical groups.

Does Dr. Mark Winston Smith accept Medicare?

Yes. CMS data shows Dr. Smith billed Medicare for 227 services in 2024, and Dr. Smith accepts Medicare assignment.

How many Medicare patients does Dr. Mark Winston Smith see?

CMS counts 110 Medicare patients who saw Dr. Smith in 2024, with an average age of 72.

Show 9 more questionsShow fewer questions

Is Dr. Mark Winston Smith board certified?

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

What services does Dr. Mark Winston Smith bill to Medicare?

In 2024, Dr. Smith's most billed Medicare services were critical care (99291).

Where did Dr. Mark Winston Smith go to medical school?

Dr. Smith graduated from Keck School of Medicine of USC in 2005.

What drugs does Dr. Mark Winston Smith prescribe most?

In 2024 Medicare Part D data, Dr. Smith's most prescribed drugs by claims were Zolpidem Tartrate.

Has Dr. Mark Winston Smith received payments from drug or device companies?

CMS Open Payments shows $412 in general payments to Dr. Smith from 11 companies from 2019 to 2024. The largest total came from Ironshore Pharmaceuticals Inc.

How long has Dr. Mark Winston Smith been practicing?

Dr. Smith graduated from medical school in 2005, 21 years ago.

Does Dr. Mark Winston Smith do research?

Dmand AI links 33 publications to Dr. Smith, published from 2007 to 2012.

Who does Dr. Mark Winston Smith publish with?

Dr. Smith's most frequent co-authors are Glenn Matthew Chertow, MD (1 shared paper), Kevin W. Finkel, MD (1 shared paper) and Michael J. Germain, MD (1 shared paper).

What insurance does Dr. Mark Winston Smith accept?

Dr. Smith is in network with 22 carriers, including Elevance, Blue Cross Blue Shield of Michigan and United Healthcare. HMO plans come from the most carriers, 14. Check the plan with the practice before a visit.

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