Dr. Maria Z. Michnowska, MD
- Medicare services, 2024
- 129
- Medicare patients, 2024
- 87
- Part D claims, 2024
- 139
- Publications
- 5
- Hospital affiliations
- 1
- Practice address
- 768 Mountain Ranch Rd, San Andreas, CA 95249
- Practice phone
- Call (209) 754-3521
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Michnowska's professional email, personal email and mobile number
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Dr. Maria Z. Michnowska is an internist in San Andreas, California
Dr. Michnowska practices at Dignity Health - Mark Twain Medical Center in San Andreas, California, part of CommonSpirit Health.
Dr. Michnowska's NPI, 1336261106, was assigned on April 4, 2007. Dr. Michnowska graduated from Medical University of Warsaw in 1987. Dr. Michnowska holds California license A73232.
- NPI
- 1336261106NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9436044021
- NPI enumeration date
- April 4, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (209) 754-3521
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 65
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Maria Z. Michnowska practices at Dignity Health - Mark Twain Medical Center in San Andreas, California
Dr. Michnowska's primary practice is Dignity Health - Mark Twain Medical Center, at 768 Mountain Ranch Rd, San Andreas, CA 95249 in Calaveras County. The practice phone is (209) 754-3521.
- Dignity Health - Mark Twain Medical Center768 Mountain Ranch Rd, San Andreas, CA 95249 · Calaveras CountyPhone(209) 754-3521
Source: Dmand AI Affiliation Data
Dr. Maria Z. Michnowska is affiliated with 1 site of care and 1 medical group
Dr. Michnowska's primary practice is Dignity Health - Mark Twain Medical Center in San Andreas, California, part of CommonSpirit Health. The medical group on file is Mark Twain Medical Center.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Maria Z. Michnowska's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Michnowska practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dignity Health - Mark Twain Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Maria Z. Michnowska is one of 16,751 internists in California
Internal medicine is Dr. Michnowska's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Michnowska's licenses on file in 2 states: California and Oregon.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- Oregon license
Clinical focus
Dmand AI lists acute diabetes, cardiac arrhythmia, chronic obstructive pulmonary disease (COPD), dementia, electrolyte disorders, gastrointestinal infection, gastrointestinal inflammation and gastrointestinal obstruction among the conditions Dr. Michnowska treats.
Internists near Dr. Michnowska
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. Maria Z. Michnowska billed Medicare for 129 services in 2024
CMS data shows 129 Medicare services from Dr. Michnowska across 3 procedure codes in 2024, for 87 Medicare patients. Medicare paid $13,301 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Michnowska's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2612024: 12951%
Dr. Michnowska compared with the California median for internists, 2024
- Dr. Michnowska
- California median
- Medicare services
- 129vs 36164% below
- Medicare patients
- 87vs 15142% below
- Part D claims
- 34vs 42192% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Michnowska'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.
Need commercial claims for Dr. Michnowska?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Michnowska and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Maria Z. Michnowska treated 87 Medicare patients in 2024, average age 81
CMS counts 87 Medicare patients who saw Dr. Michnowska in 2024. The largest group is 85 and over, with 36 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 33% are also on Medicaid. Their average risk score is 1.91, 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. Michnowska's median patient age at 76, with 55% women.
Dr. Michnowska's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Michnowska's Medicare patients by sex, 2024
- Women5867%
- Men2933%
Chronic conditions among Dr. Michnowska's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis54%
- COPD46%
- Heart failure44%
- Mood disorders44%
- Atrial fibrillation41%
- Ischemic heart disease41%
Share of Medicare patients with each condition. A patient can have several.
Dr. Michnowska's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women55%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Maria Z. Michnowska wrote 139 Medicare Part D claims in 2024
In 2024, Dr. Michnowska wrote 139 Medicare Part D claims for 81 patients. 93% of them were for generic drugs. CMS names the drug for 34 of them, across 2 drugs with 11 or more claims each, at $136 in total drug cost. In 2022, CMS named 35 claims across 3 drugs.
Dr. Michnowska's Part D claims by kind of drug, 2024
- Generic129 claims93%
- Brand-name and other10 claims7%
Dr. Michnowska'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. Michnowska's Part D claims, 2024
- Antibiotics41%57 of 139 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, 2022 to 2024
- 2022
- 2024
- Claims for drugs CMS names
- 2022: 352024: 343%
Drugs named by CMS: 2 in 2024, 3 in 2022.
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. Maria Z. Michnowska takes part in Medicare
Dr. Michnowska 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. Maria Z. Michnowska has 5 publications on record
Dmand AI links 5 papers to Dr. Michnowska. The most frequent topics are Liver, Parathyroid Hormone and Rats, Sprague-Dawley.
Topics Dr. Michnowska writes about most
- Liver
- Parathyroid Hormone
- Rats, Sprague-Dawley
- Calcium
- Calcium Channel Blockers
- Kidney Transplantation
- Sodium-Hydrogen Exchangers
- Verapamil
Recent publications by Dr. Michnowska
Am J Physiol
Pol Arch Med Wewn
Am J Nephrol
J Am Soc Nephrol
See who Dr. Michnowska researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Michnowska works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Maria Z. Michnowska received $23 in industry payments in 2019
CMS Open Payments shows 1 general payment to Dr. Michnowska from 1 drug or device company in 2019. Food and beverage make up the largest share, 100% of the total. Vapotherm Inc paid the most, $23.
Companies that paid Dr. Michnowska the most, 2019 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Maria Z. Michnowska graduated from Medical University of Warsaw
Dr. Michnowska graduated from Medical University of Warsaw in 1987.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Maria Z. Michnowska accepts plans from 3 insurance carriers
Dr. Michnowska is in network with 3 carriers, including Elevance, Blue Cross Blue Shield of Michigan and CMS Medicare. HMO plans come from the most carriers, 2. Check the plan with the practice before a visit.
- Elevance
- Blue Cross Blue Shield of Michigan
- CMS Medicare
Plan types Dr. Michnowska accepts, by number of carriers
- HMO2
- Medicare2
- POS2
- PPO2
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Maria Z. Michnowska'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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 | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Maria Z. Michnowska
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. Maria Z. Michnowska's NPI number?
Dr. Maria Z. Michnowska's NPI number is 1336261106. It was assigned on April 4, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Maria Z. Michnowska?
Dr. Maria Z. Michnowska is an internist in San Andreas, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Maria Z. Michnowska practice?
Dr. Michnowska practices at 768 Mountain Ranch Rd, San Andreas, CA 95249. Dr. Michnowska's primary practice is Dignity Health - Mark Twain Medical Center in San Andreas, California, part of CommonSpirit Health.
What is Dr. Maria Z. Michnowska's office phone number?
The practice phone on file for Dr. Michnowska is (209) 754-3521.
What is Dr. Maria Z. Michnowska's medical license number?
Dr. Michnowska holds California license A73232, one of the licenses on file in 2 states.
Which states has Dr. Maria Z. Michnowska been licensed in?
Dmand AI has state licenses on file for Dr. Michnowska in California (2000 to 2026) and Oregon (since 2007).
Which hospitals is Dr. Maria Z. Michnowska affiliated with?
Dr. Michnowska practices at Dignity Health - Mark Twain Medical Center in San Andreas, California.
What medical group is Dr. Maria Z. Michnowska part of?
Dr. Michnowska is linked to Mark Twain Medical Center.
Does Dr. Maria Z. Michnowska accept Medicare?
Yes. CMS data shows Dr. Michnowska billed Medicare for 129 services in 2024, and Dr. Michnowska accepts Medicare assignment.
How many Medicare patients does Dr. Maria Z. Michnowska see?
CMS counts 87 Medicare patients who saw Dr. Michnowska in 2024, with an average age of 81.
Show 7 more questionsShow fewer questions
What services does Dr. Maria Z. Michnowska bill to Medicare?
In 2024, Dr. Michnowska's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99223) and hospital inpatient care (99239).
Where did Dr. Maria Z. Michnowska go to medical school?
Dr. Michnowska graduated from Medical University of Warsaw in 1987.
What drugs does Dr. Maria Z. Michnowska prescribe most?
In 2024 Medicare Part D data, Dr. Michnowska's most prescribed drugs by claims were Levofloxacin and Amoxicillin-Clavulanate Potass.
Has Dr. Maria Z. Michnowska received payments from drug or device companies?
CMS Open Payments shows $23 in general payments to Dr. Michnowska from 1 company from 2019 to 2019. The largest total came from Vapotherm Inc.
How long has Dr. Maria Z. Michnowska been practicing?
Dr. Michnowska graduated from medical school in 1987, 39 years ago.
Does Dr. Maria Z. Michnowska do research?
Dmand AI links 5 publications to Dr. Michnowska.
What insurance does Dr. Maria Z. Michnowska accept?
Dr. Michnowska is in network with 3 carriers, including Elevance, Blue Cross Blue Shield of Michigan and CMS Medicare. HMO plans come from the most carriers, 2. Check the plan with the practice before a visit.
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