Dr. Anne Maria Grzegorczyk, MD
- Medicare services, 2024
- 1,470
- Medicare patients, 2024
- 485
- Part D claims, 2024
- 333
- Publications
- 1
- MIPS score, 2024
- 100
- Practice address
- 2540 East St, Concord, CA 94520
- Practice phone
- Call (925) 682-8200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Grzegorczyk'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. Anne Maria Grzegorczyk is a pulmonologist in Concord, California
Dr. Grzegorczyk practices at Concord Medical Center in Concord, California, part of John Muir Health.
Dr. Grzegorczyk's NPI, 1720434004, was assigned on May 5, 2016. Dr. Grzegorczyk graduated from VCU School of Medicine in 2016. Dr. Grzegorczyk's California license number on file is A154982.
- NPI
- 1720434004NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4284062324
- NPI enumeration date
- May 5, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (925) 682-8200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Anne Maria Grzegorczyk practices at Concord Medical Center in Concord, California
Dr. Grzegorczyk's primary practice is Concord Medical Center, at 2540 East St, Concord, CA 94520 in Contra Costa County. The practice phone is (925) 682-8200.
- Concord Medical Center2540 East St, Concord, CA 94520 · Contra Costa CountyPhone(925) 682-8200
Source: Dmand AI Affiliation Data
Dr. Anne Maria Grzegorczyk is affiliated with 4 sites of care and 2 medical groups
Dr. Grzegorczyk's primary practice is Concord Medical Center in Concord, California, part of John Muir Health. Dr. Grzegorczyk is also affiliated with John Muir Medical Center, Walnut Creek. The medical group on file is John Muir Health. Dmand AI also links Dr. Grzegorczyk to 2 more group practices and clinics and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Anne Maria Grzegorczyk's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Grzegorczyk practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Concord Medical Center | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across John Muir Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Anne Maria Grzegorczyk is one of 1,339 pulmonologists in California
Pulmonary disease is Dr. Grzegorczyk's primary specialty in the NPI Registry, under taxonomy code 207RP1001X. Dr. Grzegorczyk is board certified in critical care medicine by the American Board of Internal Medicine. Dr. Grzegorczyk has a license on file in California.
Specialties and state licenses
- Pulmonary disease, CaliforniaPrimary
Clinical focus
Dmand AI lists asthma, chronic obstructive pulmonary disease (COPD), chronic respiratory failure, pleural effusion, pneumonia, sleep apnea and tobacco use among the conditions Dr. Grzegorczyk treats.
Pulmonologists near Dr. Grzegorczyk
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. Anne Maria Grzegorczyk billed Medicare for 1,470 services in 2024
CMS data shows 1,470 Medicare services from Dr. Grzegorczyk across 21 procedure codes in 2024, for 485 Medicare patients. Medicare paid $165,087 for them.
Dr. Grzegorczyk's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 7042024: 1,21172%
- Tests and treatments
- 2023: 182024: 161794%
- Surgery
- 2023: 412024: 7276%
- Imaging
- 2023: 02024: 26
Where Dr. Grzegorczyk's Medicare services took place, 2024
- In an office31822%
- In a facility1,15278%
Dr. Grzegorczyk compared with the California median for pulmonologists, 2024
- Dr. Grzegorczyk
- California median
- Medicare services
- 1,470vs 6492.3 times
- Medicare patients
- 485vs 27278% above
- Part D claims
- 191vs 42155% below
Medians across 1,263 pulmonologists in California with Dmand AI profiles that report each measure.
Dr. Grzegorczyk'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. Grzegorczyk and other pulmonologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Anne Maria Grzegorczyk treated 485 Medicare patients in 2024, average age 76
CMS counts 485 Medicare patients who saw Dr. Grzegorczyk in 2024. The largest group is 75 to 84, with 163 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 36% are also on Medicaid. Their average risk score is 3.20, 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. Grzegorczyk's median patient age at 65, with 47% women.
Dr. Grzegorczyk's Medicare patients by age, 2024
Dr. Grzegorczyk's Medicare patients by sex, 2024
- Women24250%
- Men24350%
Chronic conditions among Dr. Grzegorczyk's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease54%
- Heart failure52%
- Atrial fibrillation47%
- Ischemic heart disease47%
- Mood disorders45%
- Arthritis44%
Share of Medicare patients with each condition. A patient can have several.
Dr. Grzegorczyk's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women47%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Anne Maria Grzegorczyk wrote 333 Medicare Part D claims in 2024
In 2024, Dr. Grzegorczyk wrote 333 Medicare Part D claims for 81 patients. 64% of them were for generic drugs. CMS names the drug for 191 of them, across 6 drugs with 11 or more claims each, at $53,647 in total drug cost. In 2023, CMS named 24 claims across 1 drug.
Dr. Grzegorczyk's Part D claims by kind of drug, 2024
- Generic214 claims64%
- Brand-name119 claims36%
Dr. Grzegorczyk'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. Grzegorczyk's Part D claims, 2024
- Antibiotics10%32 of 333 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: 242024: 191696%
Drugs named by CMS: 6 in 2024, 1 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. Anne Maria Grzegorczyk scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Grzegorczyk for performance year 2024, reported individually. Dr. Grzegorczyk accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Grzegorczyk as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Grzegorczyk's MIPS scores, performance year 2024
- 100of 100Final score
- 89.9of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 78of 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
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Dr. Anne Maria Grzegorczyk has 1 publication on record
Dmand AI links 1 paper to Dr. Grzegorczyk in 2020. Dr. Grzegorczyk's most frequent co-authors are Randall S. Edson, MD, Jocelyn Star Gandelman and Kreshnik Zejnullahu, MD.
Dr. Grzegorczyk's most frequent co-authors
- Randall S. Edson, MD1 shared paper
- Jocelyn Star Gandelman1 shared paper
- Kreshnik Zejnullahu, MD1 shared paper
Recent publications by Dr. Grzegorczyk
See who Dr. Grzegorczyk researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Grzegorczyk works with, so you can find a warm path to the right pulmonologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Anne Maria Grzegorczyk received $1,633 in industry payments from 2018 to 2025
CMS Open Payments shows 27 general payments to Dr. Grzegorczyk from 13 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 100% of the total. Boehringer Ingelheim Pharmaceuticals, Inc. paid the most, $661.
General payments to Dr. Grzegorczyk by program year, 2018 to 2025
Companies that paid Dr. Grzegorczyk the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Anne Maria Grzegorczyk graduated from VCU School of Medicine
Dr. Grzegorczyk graduated from VCU School of Medicine in 2016.
- Medical school
- Board certified in critical care medicine
- Board certified in internal medicine
- Board certified in pulmonary disease
Source: Dmand AI Professional Profile Data
Dr. Anne Maria Grzegorczyk accepts plans from 15 insurance carriers
Dr. Grzegorczyk is in network with 15 carriers, including Aetna, United Healthcare and Elevance. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- United Healthcare
- Elevance
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Blue Cross Blue Shield of Michigan
- Regence Health Plans
- Alliant Health Plans
- +7 more carriersWith a free account
Plan types Dr. Grzegorczyk accepts, by number of carriers
- PPO9
- Medicare7
- HMO6
- EPO4
- POS3
Source: Dmand AI Insurance Network Data
Sources for Dr. Anne Maria Grzegorczyk'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)Clinician Public Reporting: Overall MIPS Performance (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. Anne Maria Grzegorczyk
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. Anne Maria Grzegorczyk's NPI number?
Dr. Anne Maria Grzegorczyk's NPI number is 1720434004. It was assigned on May 5, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. Anne Maria Grzegorczyk?
Dr. Anne Maria Grzegorczyk is a pulmonologist in Concord, California. The primary specialty in the NPI Registry is Pulmonary Disease Physician (taxonomy code 207RP1001X).
Where does Dr. Anne Maria Grzegorczyk practice?
Dr. Grzegorczyk practices at 2540 East St, Concord, CA 94520. Dr. Grzegorczyk's primary practice is Concord Medical Center in Concord, California, part of John Muir Health. Dmand AI also links Dr. Grzegorczyk to 2 group practices and clinics and 1 medical group.
What is Dr. Anne Maria Grzegorczyk's office phone number?
The practice phone on file for Dr. Grzegorczyk is (925) 682-8200.
What is Dr. Anne Maria Grzegorczyk's medical license number?
Dr. Grzegorczyk's California license number on file is A154982.
Which hospitals is Dr. Anne Maria Grzegorczyk affiliated with?
Dr. Grzegorczyk practices at Concord Medical Center in Concord, California. Dr. Grzegorczyk is also affiliated with John Muir Medical Center, Walnut Creek.
What medical group is Dr. Anne Maria Grzegorczyk part of?
Dr. Grzegorczyk is linked to John Muir Health. Dmand AI links Dr. Grzegorczyk to 1 more medical group.
Does Dr. Anne Maria Grzegorczyk accept Medicare?
Yes. CMS data shows Dr. Grzegorczyk billed Medicare for 1,470 services in 2024, and Dr. Grzegorczyk accepts Medicare assignment.
Does Dr. Anne Maria Grzegorczyk offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Grzegorczyk as offering telehealth services.
What is Dr. Anne Maria Grzegorczyk's MIPS score?
Dr. Grzegorczyk's MIPS final score for performance year 2024 is 100 out of 100, reported individually.
Show 10 more questionsShow fewer questions
How many Medicare patients does Dr. Anne Maria Grzegorczyk see?
CMS counts 485 Medicare patients who saw Dr. Grzegorczyk in 2024, with an average age of 76.
Is Dr. Anne Maria Grzegorczyk board certified?
Yes. Dr. Grzegorczyk is board certified in critical care medicine by the American Board of Internal Medicine.
What services does Dr. Anne Maria Grzegorczyk bill to Medicare?
In 2024, Dr. Grzegorczyk's most billed Medicare services were critical care (99291), hospital inpatient care (99233) and hospital inpatient care (99232).
Where did Dr. Anne Maria Grzegorczyk go to medical school?
Dr. Grzegorczyk graduated from VCU School of Medicine in 2016.
What drugs does Dr. Anne Maria Grzegorczyk prescribe most?
In 2024 Medicare Part D data, Dr. Grzegorczyk's most prescribed drugs by claims were Albuterol Sulfate Hfa, Trelegy Ellipta and Montelukast Sodium.
Has Dr. Anne Maria Grzegorczyk received payments from drug or device companies?
CMS Open Payments shows $1,633 in general payments to Dr. Grzegorczyk from 13 companies from 2018 to 2025. The largest total came from Boehringer Ingelheim Pharmaceuticals, Inc.
How long has Dr. Anne Maria Grzegorczyk been practicing?
Dr. Grzegorczyk graduated from medical school in 2016, 10 years ago.
Does Dr. Anne Maria Grzegorczyk do research?
Dmand AI links 1 publication to Dr. Grzegorczyk.
Who does Dr. Anne Maria Grzegorczyk publish with?
Dr. Grzegorczyk's most frequent co-authors are Randall S. Edson, MD (1 shared paper), Jocelyn Star Gandelman (1 shared paper) and Kreshnik Zejnullahu, MD (1 shared paper).
What insurance does Dr. Anne Maria Grzegorczyk accept?
Dr. Grzegorczyk is in network with 15 carriers, including Aetna, United Healthcare and Elevance. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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