Dr. Mary Ann Ann Lillig, DO
- Medicare services, 2024
- 3,479
- Medicare patients, 2024
- 844
- Part D claims, 2024
- 27,215
- MIPS score, 2024
- 93
- Hospital affiliations
- 3
- Practice address
- 8511 N Fallbrook Ave, West Hills, CA 91304
- Practice phone
- Call (314) 317-0600
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Ipc Pac Healthcare Services of Missouri Inc
West Hills, California
Find Dr. Lillig's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Mary Ann Ann Lillig is an internist in West Hills, California
Dr. Lillig practices at Ipc Pac Healthcare Services of Missouri Inc in West Hills, California.
Dr. Lillig's NPI, 1902899834, was assigned on August 25, 2005. Dr. Lillig graduated from University of North Texas Hsc, College of Osteopathic Med in 1995. Dr. Lillig holds Missouri license 1999135661.
- NPI
- 1902899834NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9335107184
- NPI enumeration date
- August 25, 2005
- NPI status
- Active
- Practice phone
- (314) 317-0600
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 57
- Medical school graduation
- 1995
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Mary Ann Ann Lillig practices at Ipc Pac Healthcare Services of Missouri Inc in West Hills, California
Dr. Lillig's primary practice is Ipc Pac Healthcare Services of Missouri Inc, at 8511 N Fallbrook Ave, West Hills, CA 91304 in Los Angeles County. The practice phone is (314) 317-0600.
- Ipc Pac Healthcare Services of Missouri Inc8511 N Fallbrook Ave, West Hills, CA 91304 · Los Angeles CountyPhone(314) 317-0600
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mary Ann Ann Lillig is affiliated with 11 sites of care and 5 medical groups
Dr. Lillig's primary practice is Ipc Pac Healthcare Services of Missouri Inc in West Hills, California. Dr. Lillig is also affiliated with The University of Kansas Health System Olathe Hospital. The medical group on file is TeamHealth. Dmand AI also links Dr. Lillig to 2 more hospitals, 4 medical groups, 3 hospices, 3 skilled nursing facilities and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Mary Ann Ann Lillig's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lillig practices, 10 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ipc Pac Healthcare Services of Missouri Inc | Available with a free account |
| +10 more sites and 4 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mary Ann Ann Lillig is one of 16,751 internists in California
Internal medicine is Dr. Lillig's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Lillig's licenses on file in 2 states: Missouri and Kansas.
Specialties and state licenses
- Internal medicine, MissouriPrimary
- Kansas license
Internists near Dr. Lillig
Counts of internists 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. Mary Ann Ann Lillig billed Medicare for 3,479 services in 2024
CMS data shows 3,479 Medicare services from Dr. Lillig across 10 procedure codes in 2024, for 844 Medicare patients. Medicare paid $242,964 for them.
Dr. Lillig's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3,3352024: 3,4794%
Where Dr. Lillig's Medicare services took place, 2024
- In an office52015%
- In a facility2,95985%
Dr. Lillig compared with the California median for internists, 2024
- Dr. Lillig
- California median
- Medicare services
- 3,479vs 3619.6 times
- Medicare patients
- 844vs 1515.6 times
- Part D claims
- 26,433vs 42162.8 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Lillig'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Lillig and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mary Ann Ann Lillig treated 844 Medicare patients in 2024, average age 76
CMS counts 844 Medicare patients who saw Dr. Lillig in 2024. The largest group is 75 to 84, with 319 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 32% are also on Medicaid. Their average risk score is 2.19, 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. Lillig's median patient age at 69, with 44% women.
Dr. Lillig's Medicare patients by age, 2024
Dr. Lillig's Medicare patients by sex, 2024
- Women45053%
- Men39447%
Chronic conditions among Dr. Lillig's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis65%
- Mood disorders58%
- Depression56%
- Anxiety51%
- Diabetes49%
- Chronic kidney disease45%
Share of Medicare patients with each condition. A patient can have several.
Dr. Lillig'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
- Women44%
- Men56%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mary Ann Ann Lillig wrote 27,215 Medicare Part D claims in 2024
In 2024, Dr. Lillig wrote 27,215 Medicare Part D claims for 635 patients. 86% of them were for generic drugs. CMS names the drug for 26,433 of them, across 253 drugs with 11 or more claims each, at $1,931,249 in total drug cost. In 2023, CMS named 26,572 claims across 248 drugs.
Dr. Lillig's Part D claims by kind of drug, 2024
- Generic23,280 claims86%
- Brand-name3,812 claims14%
- Other123 claims0%
Dr. Lillig'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. Lillig's Part D claims, 2024
- Opioids3%726 of 27,215 claims
- Antibiotics2%542 of 27,215 claims
- Antipsychotics, patients 65 and over4%1,070 of 27,215 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: 26,5722024: 26,4331%
Drugs named by CMS: 253 in 2024, 248 in 2023.
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. Mary Ann Ann Lillig scored 93 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 93 out of 100 for Dr. Lillig for performance year 2024, reported through an alternative payment model (APM).
Dr. Lillig's MIPS scores, performance year 2024
- 93of 100Final score
- 77of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Mary Ann Ann Lillig received $402 in industry payments from 2016 to 2024
CMS Open Payments shows 17 general payments to Dr. Lillig from 4 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 93% of the total. Janssen Pharmaceuticals, Inc paid the most, $150.
General payments to Dr. Lillig by program year, 2016 to 2024
General payments to Dr. Lillig by kind, 2016 to 2024
- Food and beverage$37293%
- Education$307%
Companies that paid Dr. Lillig the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mary Ann Ann Lillig graduated from University of North Texas Hsc, College of Osteopathic Med
Dr. Lillig graduated from University of North Texas Hsc, College of Osteopathic Med in 1995.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mary Ann Ann Lillig's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare 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 percentiles | Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Mary Ann Ann Lillig
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. Mary Ann Ann Lillig's NPI number?
Dr. Mary Ann Ann Lillig's NPI number is 1902899834. It was assigned on August 25, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Mary Ann Ann Lillig?
Dr. Mary Ann Ann Lillig is an internist in West Hills, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Mary Ann Ann Lillig practice?
Dr. Lillig practices at 8511 N Fallbrook Ave, West Hills, CA 91304. Dr. Lillig's primary practice is Ipc Pac Healthcare Services of Missouri Inc in West Hills, California. Dmand AI also links Dr. Lillig to 2 hospitals, 4 medical groups, 3 hospices, 3 skilled nursing facilities and 1 group practice or clinic.
What is Dr. Mary Ann Ann Lillig's office phone number?
The practice phone on file for Dr. Lillig is (314) 317-0600.
What is Dr. Mary Ann Ann Lillig's medical license number?
Dr. Lillig holds Missouri license 1999135661, one of the licenses on file in 2 states.
Which states has Dr. Mary Ann Ann Lillig been licensed in?
Dmand AI has state licenses on file for Dr. Lillig in Missouri and Kansas.
Which hospitals is Dr. Mary Ann Ann Lillig affiliated with?
Dr. Lillig is affiliated with The University of Kansas Health System Olathe Hospital. Dmand AI links Dr. Lillig to 2 more hospitals.
What medical group is Dr. Mary Ann Ann Lillig part of?
Dr. Lillig is linked to TeamHealth. Dmand AI links Dr. Lillig to 4 more medical groups.
Does Dr. Mary Ann Ann Lillig accept Medicare?
Yes. CMS data shows Dr. Lillig billed Medicare for 3,479 services in 2024.
What is Dr. Mary Ann Ann Lillig's MIPS score?
Dr. Lillig's MIPS final score for performance year 2024 is 93 out of 100, reported through an alternative payment model (APM).
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How many Medicare patients does Dr. Mary Ann Ann Lillig see?
CMS counts 844 Medicare patients who saw Dr. Lillig in 2024, with an average age of 76.
What services does Dr. Mary Ann Ann Lillig bill to Medicare?
In 2024, Dr. Lillig's most billed Medicare services were hospital inpatient care (99232), nursing facility care (99309) and hospital inpatient care (99233).
Where did Dr. Mary Ann Ann Lillig go to medical school?
Dr. Lillig graduated from University of North Texas Hsc, College of Osteopathic Med in 1995.
What drugs does Dr. Mary Ann Ann Lillig prescribe most?
In 2024 Medicare Part D data, Dr. Lillig's most prescribed drugs by claims were Amlodipine Besylate, Atorvastatin Calcium and Gabapentin.
Has Dr. Mary Ann Ann Lillig received payments from drug or device companies?
CMS Open Payments shows $402 in general payments to Dr. Lillig from 4 companies from 2016 to 2024. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Mary Ann Ann Lillig been practicing?
Dr. Lillig graduated from medical school in 1995, 31 years ago.
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