Dr. Mark Leon Willenbring, MD

  • San Diego, CA
  • Psychiatrist
NPI1003930124
Medicare services, 2016
41
Part D claims, 2024
75
Publications
68
Industry payments
$41
Medical groups
3
Practice address
6755 Mira Mesa Blvd, San Diego, CA 92121
Practice phone
Call (917) 391-0076
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

NYC Psychiatric Associates

San Diego, California

See all 4 affiliations

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Dr. Mark Leon Willenbring is a psychiatrist in San Diego, California

Dr. Willenbring practices at NYC Psychiatric Associates in San Diego, California.

Dr. Willenbring's NPI, 1003930124, was assigned on March 16, 2007. Dr. Willenbring graduated from University Of Minnesota Medical School in 1974. Dr. Willenbring's Minnesota license number on file is 22040.

NPI and contact details
NPI enumeration date
March 16, 2007
NPI status
Active
Practice phone
(917) 391-0076
Professional email
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Personal email
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Mobile number
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Sex
Male
Medical school graduation
1974

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

Dr. Mark Leon Willenbring practices at NYC Psychiatric Associates in San Diego, California

Dr. Willenbring's primary practice is NYC Psychiatric Associates, at 6755 Mira Mesa Blvd, San Diego, CA 92121 in San Diego County. The practice phone is (917) 391-0076.

  • NYC Psychiatric Associates
    6755 Mira Mesa Blvd, San Diego, CA 92121 · San Diego CountyPhone(917) 391-0076

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

Dr. Mark Leon Willenbring is affiliated with 1 site of care and 3 medical groups

Dr. Willenbring's primary practice is NYC Psychiatric Associates in San Diego, California. The medical group on file is NYC Psychiatric Associates. Dmand AI also links Dr. Willenbring to 2 more medical groups, each named with a free account.

See all 4 affiliations for Dr. Willenbring

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

Dmand AI tracks the EHR system at Dr. Mark Leon Willenbring's practice

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

EHR by site
SiteEHR vendor and product
NYC Psychiatric AssociatesAvailable with a free account
+2 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Mark Leon Willenbring is one of 6,803 psychiatrists in California

Psychiatry is Dr. Willenbring's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Willenbring is board certified in psychiatry by the American Board of Psychiatry and Neurology. Dmand AI has Dr. Willenbring's licenses on file in 15 states: Minnesota, South Dakota, Colorado, West Virginia, Arkansas, Georgia, Hawaii, Illinois, Oklahoma, Rhode Island, Arizona, California, Florida, Indiana and Massachusetts.

Specialties and state licenses

  • Psychiatry, MinnesotaPrimaryLicense 22040 · 1975 to 2025 · taxonomy 2084P0800X
  • South Dakota licenseSince 2025
  • Colorado license2022 to 2027
  • West Virginia license2022 to 2027
  • Arkansas license2021 to 2026
  • Georgia license2022 to 2026
  • Hawaii license2022 to 2026
  • Illinois license2022 to 2026
  • Oklahoma license2022 to 2026
  • Rhode Island license2021 to 2026
  • Arizona license2022 to 2025
  • California license2018 to 2025
  • Florida license2021 to 2025
  • Indiana license2022 to 2025
  • Massachusetts license2024 to 2025

Psychiatrists near Dr. Willenbring

Counts of psychiatrists 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 Leon Willenbring billed Medicare for 41 services in 2016

CMS data shows 41 Medicare services from Dr. Willenbring across 1 procedure code in 2016, all of them office visits. Medicare paid $2,999 for them. Every service was in an office.

Medicare services, 201641
Paid by Medicare$2,999
Procedure codes1

Dr. Willenbring compared with the California median for psychiatrists, 2016

  • Dr. Willenbring
  • California median
Medicare services
41vs 11966% below
Part D claims
13vs 14491% below

Medians across 6,809 psychiatrists in California with Dmand AI profiles that report each measure.

Dr. Willenbring's most billed Medicare procedure codes, 2016

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. Willenbring

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

Dr. Mark Leon Willenbring's patients have a median age of 33

Across all payers, Dmand AI patient panel data puts Dr. Willenbring's median patient age at 33, with 51% women.

Dr. Willenbring's patients across all payers

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

Patient panel by age, all payers

Median age 33

Patient panel by sex, all payers

  • Women51%
  • Men47%

Source: Dmand AI Patient Panel Data

Dr. Mark Leon Willenbring wrote 75 Medicare Part D claims in 2024

In 2024, Dr. Willenbring wrote 75 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 $381 in total drug cost. In 2021, CMS named 173 claims across 9 drugs.

Part D claims, 202475
Drugs named by CMS1
Total drug cost$381

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

  • Generic72 claims96%
  • Brand-name and other3 claims4%

Dr. Willenbring'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, 2021 to 2024

  • 2021
  • 2024
Claims for drugs CMS names
2021: 1732024: 1392%

Drugs named by CMS: 1 in 2024, 9 in 2021.

See all prescribing by Dr. Willenbring

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

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Dr. Mark Leon Willenbring has 68 publications on record

Dmand AI links 68 papers to Dr. Willenbring, published from 2006 to 2013. 2006 was the busiest year, with 2. The most frequent topics are Alcoholism, Substance-Related Disorders and Minnesota. Dr. Willenbring has published most often in Alcohol Clin Exp Res. Dr. Willenbring's most frequent co-authors are Steven S. Fu, MD, Libin Ho, MD, PhD and Bankole A. Johnson, MD.

Papers68
Years published2006 to 2013

Dr. Willenbring's papers by year, 2006 to 2013

Topics Dr. Willenbring writes about most

  • Alcoholism
  • Substance-Related Disorders
  • Minnesota
  • Veterans
  • Alcohol Drinking
  • Smoking Cessation
  • Mental Disorders
  • Ambulatory Care

Dr. Willenbring's most frequent co-authors

Recent publications by Dr. Willenbring

See all 68 publications and co-authors

See who Dr. Willenbring researches with

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

How network discovery works

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

Dr. Mark Leon Willenbring received $41 in industry payments from 2016 to 2018

CMS Open Payments shows 3 general payments to Dr. Willenbring from 2 drug and device companies from 2016 to 2018. Food and beverage make up the largest share, 100% of the total. Shire North American Group Inc paid the most, $26.

General payments to Dr. Willenbring by program year, 2016 to 2018

Companies that paid Dr. Willenbring the most, 2016 to 2018

Share is of all general payments to this clinician.

See all payments to Dr. Willenbring

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

Dr. Mark Leon Willenbring has 17 awards and honors on record

Dmand AI lists 17 awards for Dr. Willenbring, most recently CMS Stage 1 EHR in 2011.

Awards and honors for Dr. Willenbring

  1. 2011
    • CMS Stage 1 EHR
  2. 2009
    • Marty Mann Founder
  3. 2008
    • Certificate for Outstanding Contributions
    • NIH Director’s
  4. 2007
    • Emmy Award to NIAAA
  5. 2006
    • Distinguished Technical Communication
See all 17 awards

Source: Dmand AI Professional Profile Data

Dr. Mark Leon Willenbring graduated from University Of Minnesota Medical School

Dr. Willenbring graduated from University Of Minnesota Medical School in 1974. Dr. Willenbring is a member of American Academy of Addiction Psychiatry, APA and ASAM.

  1. Medical schoolUniversity Of Minnesota Medical School
  2. Board certified in psychiatryAmerican Board of Psychiatry and Neurology

Source: Dmand AI Professional Profile Data

Dr. Mark Leon Willenbring accepts plans from 9 insurance carriers

Dr. Willenbring is in network with 9 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.

  • Aetna
  • Elevance
  • Blue Cross Blue Shield of Michigan
  • United Healthcare
  • Blue Cross Blue Shield of Massachusetts
  • HCSC
  • MVP Health Care
  • Regence Health Plans
  • +1 more carriersWith a free account

Plan types Dr. Willenbring accepts, by number of carriers

  1. Medicare7
  2. PPO7
  3. HMO4
  4. POS4
  5. EPO3
  6. Medicaid2

Source: Dmand AI Insurance Network Data

Sources for Dr. Mark Leon Willenbring'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 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 Data
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)
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)
Awards and committee rolesDmand AI Professional Profile Data
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 Leon Willenbring

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 Leon Willenbring's NPI number?

Dr. Mark Leon Willenbring's NPI number is 1003930124. It was assigned on March 16, 2007, and it is active in the NPI Registry.

What kind of doctor is Dr. Mark Leon Willenbring?

Dr. Mark Leon Willenbring is a psychiatrist in San Diego, California. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).

Where does Dr. Mark Leon Willenbring practice?

Dr. Willenbring practices at 6755 Mira Mesa Blvd, San Diego, CA 92121. Dr. Willenbring's primary practice is NYC Psychiatric Associates in San Diego, California. Dmand AI also links Dr. Willenbring to 2 medical groups.

What is Dr. Mark Leon Willenbring's office phone number?

The practice phone on file for Dr. Willenbring is (917) 391-0076.

What is Dr. Mark Leon Willenbring's medical license number?

Dr. Willenbring's Minnesota license number on file is 22040, one of the licenses on file in 15 states.

Which states has Dr. Mark Leon Willenbring been licensed in?

Dmand AI has state licenses on file for Dr. Willenbring in Minnesota (1975 to 2025), South Dakota (since 2025), Colorado (2022 to 2027), West Virginia (2022 to 2027), Arkansas (2021 to 2026), Georgia (2022 to 2026), Hawaii (2022 to 2026), Illinois (2022 to 2026), Oklahoma (2022 to 2026), Rhode Island (2021 to 2026), Arizona (2022 to 2025), California (2018 to 2025), Florida (2021 to 2025), Indiana (2022 to 2025) and Massachusetts (2024 to 2025).

What medical group is Dr. Mark Leon Willenbring part of?

Dr. Willenbring is linked to NYC Psychiatric Associates. Dmand AI links Dr. Willenbring to 2 more medical groups.

Does Dr. Mark Leon Willenbring accept Medicare?

Yes. CMS data shows Dr. Willenbring billed Medicare for 41 services in 2016.

Is Dr. Mark Leon Willenbring board certified?

Yes. Dr. Willenbring is board certified in psychiatry by the American Board of Psychiatry and Neurology.

What services does Dr. Mark Leon Willenbring bill to Medicare?

In 2016, Dr. Willenbring's most billed Medicare services were office visit, established patient (99214).

Show 7 more questionsShow fewer questions

Where did Dr. Mark Leon Willenbring go to medical school?

Dr. Willenbring graduated from University Of Minnesota Medical School in 1974.

What drugs does Dr. Mark Leon Willenbring prescribe most?

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

Has Dr. Mark Leon Willenbring received payments from drug or device companies?

CMS Open Payments shows $41 in general payments to Dr. Willenbring from 2 companies from 2016 to 2018. The largest total came from Shire North American Group Inc.

How long has Dr. Mark Leon Willenbring been practicing?

Dr. Willenbring graduated from medical school in 1974, 52 years ago.

Does Dr. Mark Leon Willenbring do research?

Dmand AI links 68 publications to Dr. Willenbring, published from 2006 to 2013.

Who does Dr. Mark Leon Willenbring publish with?

Dr. Willenbring's most frequent co-authors are Steven S. Fu, MD (1 shared paper), Libin Ho, MD, PhD (1 shared paper) and Bankole A. Johnson, MD (1 shared paper).

What insurance does Dr. Mark Leon Willenbring accept?

Dr. Willenbring is in network with 9 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.

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