Dr. Deborah A. Greer, MD
- Medicare services, 2024
- 65
- Medicare patients, 2024
- 85
- Part D claims, 2024
- 64
- Publications
- 8
- MIPS score, 2024
- 100
- Practice address
- 1450 Treat Blvd, Walnut Creek, CA 94597
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
John Muir Medical Center - Walnut C - Imaging - HOPD
Acute Care Hospital outpatient department · Walnut Creek, California
Find Dr. Greer'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. Deborah A. Greer is a family medicine physician in Walnut Creek, California
Dr. Greer practices at John Muir Medical Center - Walnut C - Imaging - HOPD in Walnut Creek, California.
Dr. Greer's NPI, 1003851858, was assigned on June 17, 2006. Dr. Greer graduated from UC Davis School of Medicine in 1996. Dr. Greer's California license number on file is A64667.
- NPI
- 1003851858NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1759334766
- NPI enumeration date
- June 17, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Deborah A. Greer practices at John Muir Medical Center - Walnut C - Imaging - HOPD in Walnut Creek, California
Dr. Greer's primary practice is John Muir Medical Center - Walnut C - Imaging - HOPD, at 1450 Treat Blvd, Walnut Creek, CA 94597.
- John Muir Medical Center - Walnut C - Imaging - HOPD1450 Treat Blvd, Walnut Creek, CA 94597
Source: Dmand AI Affiliation Data
Dr. Deborah A. Greer is affiliated with 2 sites of care and 1 medical group
Dr. Greer's primary practice is John Muir Medical Center - Walnut C - Imaging - HOPD in Walnut Creek, California. The medical group on file is John Muir Medical Group. Dmand AI also links Dr. Greer to 1 more group practice or clinic, named with a free account. Dr. Greer's employer is on file too: a hospital.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Deborah A. Greer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Greer practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| John Muir Medical Center - Walnut C - Imaging - HOPD | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Deborah A. Greer is one of 15,680 family medicine physicians in California
Family medicine is Dr. Greer's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Greer is board certified in family medicine by the American Board of Family Medicine. Dr. Greer has a license on file in California.
Specialties and state licenses
- Family medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists acute sinusitis, chronic hypertension, chronic kidney disease, eyelid inflammation, joint pain, low blood pressure, lower back pain and pneumonia among the conditions Dr. Greer treats.
Family medicine physicians near Dr. Greer
Counts of family medicine physicians 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. Deborah A. Greer billed Medicare for 65 services in 2024
CMS data shows 65 Medicare services from Dr. Greer across 1 procedure code in 2024, all of them office visits, for 85 Medicare patients. Medicare paid $4,609 for them. Every service was in an office.
Dr. Greer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 622024: 655%
Dr. Greer compared with the California median for family medicine physicians, 2024
- Dr. Greer
- California median
- Medicare services
- 65vs 24674% below
- Medicare patients
- 85vs 11828% below
- Part D claims
- 27vs 83397% below
Medians across 15,349 family medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Greer'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. Greer and other family medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Deborah A. Greer treated 85 Medicare patients in 2024, average age 71
CMS counts 85 Medicare patients who saw Dr. Greer in 2024. The largest group is 65 to 74, with 42 patients. 69% of them have high cholesterol, and 64% have high blood pressure. 44% are also on Medicaid. Their average risk score is 1.15, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Greer's median patient age at 43, with 53% women.
Dr. Greer's Medicare patients by age, 2024
Dr. Greer's Medicare patients by sex, 2024
- Women5666%
- Men2934%
Chronic conditions among Dr. Greer's Medicare patients, 2024
- High cholesterol69%
- High blood pressure64%
- Arthritis49%
- Diabetes27%
- Anxiety24%
- Mood disorders22%
- Depression21%
- Chronic kidney disease20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Greer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 43
Patient panel by sex, all payers
- Women53%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Deborah A. Greer wrote 64 Medicare Part D claims in 2024
In 2024, Dr. Greer wrote 64 Medicare Part D claims for 30 patients. 86% of them were for generic drugs. CMS names the drug for 27 of them, across 2 drugs with 11 or more claims each, at $312 in total drug cost. In 2019, CMS named 35 claims across 2 drugs.
Dr. Greer's Part D claims by kind of drug, 2024
- Generic55 claims86%
- Brand-name and other9 claims14%
Dr. Greer's most prescribed drugs by claims, 2021
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, 2019 to 2021
- 2019
- 2021
- Claims for drugs CMS names
- 2019: 352021: 2723%
Drugs named by CMS: 2 in 2021, 2 in 2019.
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. Deborah A. Greer 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. Greer for performance year 2024, reported through an alternative payment model (APM). Dr. Greer accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Greer's MIPS scores, performance year 2024
- 100of 100Final score
- 86.3of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
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. Deborah A. Greer has 8 publications on record
Dmand AI links 8 papers to Dr. Greer, published from 2005 to 2007. 2005 was the busiest year, with 2. The most frequent topics are Green Fluorescent Proteins, Mice, Inbred C57BL and Bone Marrow Cells. Dr. Greer has published most often in Exp Hematol. Dr. Greer's most frequent co-author is Sahana Ramanujam, MD.
Topics Dr. Greer writes about most
- Green Fluorescent Proteins
- Mice, Inbred C57BL
- Bone Marrow Cells
- Bone Marrow Transplantation
- Muscle Fibers, Skeletal
- Muscle, Skeletal
- Regeneration
- Cell Differentiation
Dr. Greer's most frequent co-authors
Recent publications by Dr. Greer
Biochim Biophys Acta
See who Dr. Greer researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Greer works with, so you can find a warm path to the right family medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Deborah A. Greer received $280 in industry payments from 2016 to 2017
CMS Open Payments shows 7 general payments to Dr. Greer from 3 drug and device companies from 2016 to 2017. Food and beverage make up the largest share, 100% of the total. Pfizer Inc. paid the most, $119.
General payments to Dr. Greer by program year, 2016 to 2017
Companies that paid Dr. Greer the most, 2016 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Deborah A. Greer graduated from UC Davis School of Medicine
Dr. Greer graduated from UC Davis School of Medicine in 1996.
- Medical school
- Board certified in family medicine
Source: Dmand AI Professional Profile Data
Dr. Deborah A. Greer accepts plans from 14 insurance carriers
Dr. Greer is in network with 14 carriers, including Elevance, Blue Cross Blue Shield of Michigan and Excellus BlueCross BlueShield. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Elevance
- Blue Cross Blue Shield of Michigan
- Excellus BlueCross BlueShield
- United Healthcare
- HCSC
- Aetna
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- +6 more carriersWith a free account
Plan types Dr. Greer accepts, by number of carriers
- Medicare9
- PPO9
- HMO6
- EPO4
- POS4
Source: Dmand AI Insurance Network Data
Sources for Dr. Deborah A. Greer'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 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. Deborah A. Greer
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. Deborah A. Greer's NPI number?
Dr. Deborah A. Greer's NPI number is 1003851858. It was assigned on June 17, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Deborah A. Greer?
Dr. Deborah A. Greer is a family medicine physician in Walnut Creek, California. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Deborah A. Greer practice?
Dr. Greer practices at 1450 Treat Blvd, Walnut Creek, CA 94597. Dr. Greer's primary practice is John Muir Medical Center - Walnut C - Imaging - HOPD in Walnut Creek, California. Dmand AI also links Dr. Greer to 1 group practice or clinic.
What is Dr. Deborah A. Greer's medical license number?
Dr. Greer's California license number on file is A64667.
What medical group is Dr. Deborah A. Greer part of?
Dr. Greer is linked to John Muir Medical Group.
Does Dr. Deborah A. Greer accept Medicare?
Yes. CMS data shows Dr. Greer billed Medicare for 65 services in 2024, and Dr. Greer accepts Medicare assignment.
What is Dr. Deborah A. Greer's MIPS score?
Dr. Greer's MIPS final score for performance year 2024 is 100 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. Deborah A. Greer see?
CMS counts 85 Medicare patients who saw Dr. Greer in 2024, with an average age of 71.
Is Dr. Deborah A. Greer board certified?
Yes. Dr. Greer is board certified in family medicine by the American Board of Family Medicine.
What services does Dr. Deborah A. Greer bill to Medicare?
In 2024, Dr. Greer's most billed Medicare services were office visit, established patient (99213).
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Where did Dr. Deborah A. Greer go to medical school?
Dr. Greer graduated from UC Davis School of Medicine in 1996.
What drugs does Dr. Deborah A. Greer prescribe most?
In 2021 Medicare Part D data, Dr. Greer's most prescribed drugs by claims were Lisinopril and Atorvastatin Calcium.
Has Dr. Deborah A. Greer received payments from drug or device companies?
CMS Open Payments shows $280 in general payments to Dr. Greer from 3 companies from 2016 to 2017. The largest total came from Pfizer Inc.
How long has Dr. Deborah A. Greer been practicing?
Dr. Greer graduated from medical school in 1996, 30 years ago.
Does Dr. Deborah A. Greer do research?
Dmand AI links 8 publications to Dr. Greer, published from 2005 to 2007.
Who does Dr. Deborah A. Greer publish with?
Dr. Greer's most frequent co-authors are Sahana Ramanujam, MD (1 shared paper).
What insurance does Dr. Deborah A. Greer accept?
Dr. Greer is in network with 14 carriers, including Elevance, Blue Cross Blue Shield of Michigan and Excellus BlueCross BlueShield. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.
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