Dr. Michael Allen Greenfield, MD
- Medicare services, 2024
- 1,514
- Medicare patients, 2024
- 253
- Part D claims, 2024
- 5,277
- Hospital affiliations
- 5
- Industry payments
- $108
- Practice address
- 7315 E Frontage Rd, Shawnee Mission, KS 66204
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Adventhealth Pain Specialists - HOPD
Acute Care Hospital outpatient department · Shawnee Mission, Kansas
Find Dr. Greenfield'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. Michael Allen Greenfield is an internist in Merriam, Kansas
Dr. Greenfield practices at Adventhealth Pain Specialists - HOPD in Shawnee Mission, Kansas.
Dr. Greenfield's NPI, 1336191287, was assigned on May 17, 2006. Dr. Greenfield graduated from University of Kansas School of Medicine - Kansas City in 1994. Dr. Greenfield's Kansas license number on file is 0426184.
- NPI
- 1336191287NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6204964166
- NPI enumeration date
- May 17, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Michael Allen Greenfield practices at Adventhealth Pain Specialists - HOPD in Shawnee Mission, Kansas
Dr. Greenfield's primary practice is Adventhealth Pain Specialists - HOPD, at 7315 E Frontage Rd, Shawnee Mission, KS 66204.
- Adventhealth Pain Specialists - HOPD7315 E Frontage Rd, Shawnee Mission, KS 66204
Source: Dmand AI Affiliation Data
Dr. Michael Allen Greenfield is affiliated with 9 sites of care and 2 medical groups
Dr. Greenfield's primary practice is Adventhealth Pain Specialists - HOPD in Shawnee Mission, Kansas. Dr. Greenfield is also affiliated with The University of Kansas Hospital. The medical group on file is AdventHealth Medical Group. Dmand AI also links Dr. Greenfield to 4 more hospitals, 2 group practices and clinics, 1 home health agency and 1 medical group, each named with a free account. Dr. Greenfield's employer is on file too: a hospital.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Michael Allen Greenfield's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Greenfield practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Adventhealth Pain Specialists - HOPD | Available with a free account |
| +8 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Michael Allen Greenfield is one of 866 internists in Kansas
Internal medicine is Dr. Greenfield's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Greenfield is board certified in internal medicine by the American Board of Internal Medicine. Dr. Greenfield has a license on file in Kansas.
Specialties and state licenses
- Internal medicine, KansasPrimary
Clinical focus
Dmand AI lists acid reflux, acute sinusitis, acute skin infection, adjustment disease, aneurysm, anxiety, arthritis and asthma among the conditions Dr. Greenfield treats.
Internists near Dr. Greenfield
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. Michael Allen Greenfield billed Medicare for 1,514 services in 2024
CMS data shows 1,514 Medicare services from Dr. Greenfield across 21 procedure codes in 2024, for 253 Medicare patients. Medicare paid $56,241 for them.
Dr. Greenfield's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Other services
- 2023: 5362024: 78546%
- Office and hospital visits
- 2023: 5302024: 5779%
- Tests and treatments
- 2023: 672024: 661%
- Lab and pathology
- 2023: 432024: 6244%
- Surgery
- 2023: 182024: 2433%
Where Dr. Greenfield's Medicare services took place, 2024
- In an office1,41493%
- In a facility1007%
Dr. Greenfield compared with the Kansas median for internists, 2024
- Dr. Greenfield
- Kansas median
- Medicare services
- 1,514vs 6812.2 times
- Medicare patients
- 253vs 253Close to median
- Part D claims
- 4,788vs 17926.7 times
Medians across 820 internists in Kansas with Dmand AI profiles that report each measure.
Dr. Greenfield'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. Greenfield?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Greenfield and other internists in Kansas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Michael Allen Greenfield treated 253 Medicare patients in 2024, average age 74
CMS counts 253 Medicare patients who saw Dr. Greenfield in 2024. The largest group is 65 to 74, with 143 patients. 75% of them have high cholesterol, and 69% have high blood pressure. Their average risk score is 0.96, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Greenfield's median patient age at 60, with 38% women.
Dr. Greenfield's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Greenfield's Medicare patients by sex, 2024
- Women10943%
- Men14457%
Chronic conditions among Dr. Greenfield's Medicare patients, 2024
- High cholesterol75%
- High blood pressure69%
- Arthritis42%
- Anxiety29%
- Diabetes28%
- Ischemic heart disease26%
- Chronic kidney disease22%
- Mood disorders21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Greenfield's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women38%
- Men62%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Michael Allen Greenfield wrote 5,277 Medicare Part D claims in 2024
In 2024, Dr. Greenfield wrote 5,277 Medicare Part D claims for 369 patients. 90% of them were for generic drugs. CMS names the drug for 4,788 of them, across 80 drugs with 11 or more claims each, at $250,023 in total drug cost. In 2023, CMS named 4,137 claims across 77 drugs.
Dr. Greenfield's Part D claims by kind of drug, 2024
- Generic4,730 claims90%
- Brand-name530 claims10%
- Other17 claims0%
Dr. Greenfield'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. Greenfield's Part D claims, 2024
- Opioids1%61 of 5,277 claims
- Antibiotics1%59 of 5,277 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: 4,1372024: 4,78816%
Drugs named by CMS: 80 in 2024, 77 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
How Dr. Michael Allen Greenfield takes part in Medicare
Dr. Greenfield accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Michael Allen Greenfield received $108 in industry payments from 2019 to 2024
CMS Open Payments shows 5 general payments to Dr. Greenfield from 3 drug and device companies from 2019 to 2024. Food and beverage make up the largest share, 76% of the total. Janssen Pharmaceuticals, Inc paid the most, $69.
General payments to Dr. Greenfield by program year, 2019 to 2024
General payments to Dr. Greenfield by kind, 2019 to 2024
- Food and beverage$8376%
- Education$2624%
Companies that paid Dr. Greenfield the most, 2019 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Michael Allen Greenfield graduated from University of Kansas School of Medicine - Kansas City
Dr. Greenfield graduated from University of Kansas School of Medicine - Kansas City in 1994.
- Medical school
- Board certified in internal medicine
- Board certified in pediatrics
Source: Dmand AI Professional Profile Data
Dr. Michael Allen Greenfield accepts plans from 17 insurance carriers
Dr. Greenfield is in network with 17 carriers, including Aetna, United Healthcare and Blue Cross and Blue Shield of Kansas City. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.
- Aetna
- United Healthcare
- Blue Cross and Blue Shield of Kansas City
- Elevance
- Cigna
- Alliant Health Plans
- Aspirus Health Plan
- Blue Cross Blue Shield of Michigan
- +9 more carriersWith a free account
Plan types Dr. Greenfield accepts, by number of carriers
- PPO11
- HMO10
- POS6
- Medicare5
- EPO4
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Michael Allen Greenfield'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)Doctors and Clinicians Utilization Data (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 |
| 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. Michael Allen Greenfield
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. Michael Allen Greenfield's NPI number?
Dr. Michael Allen Greenfield's NPI number is 1336191287. It was assigned on May 17, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael Allen Greenfield?
Dr. Michael Allen Greenfield is an internist in Merriam, Kansas. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Michael Allen Greenfield practice?
Dr. Greenfield practices at 7315 E Frontage Rd, Shawnee Mission, KS 66204. Dr. Greenfield's primary practice is Adventhealth Pain Specialists - HOPD in Shawnee Mission, Kansas. Dmand AI also links Dr. Greenfield to 4 hospitals, 2 group practices and clinics, 1 home health agency and 1 medical group.
What is Dr. Michael Allen Greenfield's medical license number?
Dr. Greenfield's Kansas license number on file is 0426184.
Which hospitals is Dr. Michael Allen Greenfield affiliated with?
Dr. Greenfield is affiliated with The University of Kansas Hospital. Dmand AI links Dr. Greenfield to 4 more hospitals.
What medical group is Dr. Michael Allen Greenfield part of?
Dr. Greenfield is linked to AdventHealth Medical Group. Dmand AI links Dr. Greenfield to 1 more medical group.
Does Dr. Michael Allen Greenfield accept Medicare?
Yes. CMS data shows Dr. Greenfield billed Medicare for 1,514 services in 2024, and Dr. Greenfield accepts Medicare assignment.
How many Medicare patients does Dr. Michael Allen Greenfield see?
CMS counts 253 Medicare patients who saw Dr. Greenfield in 2024, with an average age of 74.
Is Dr. Michael Allen Greenfield board certified?
Yes. Dr. Greenfield is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Michael Allen Greenfield bill to Medicare?
In 2024, Dr. Greenfield's most billed Medicare services were office visit, established patient (99214), medicare service (G2211) and medicare service (G0442).
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Where did Dr. Michael Allen Greenfield go to medical school?
Dr. Greenfield graduated from University of Kansas School of Medicine - Kansas City in 1994.
What drugs does Dr. Michael Allen Greenfield prescribe most?
In 2024 Medicare Part D data, Dr. Greenfield's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Lisinopril.
Has Dr. Michael Allen Greenfield received payments from drug or device companies?
CMS Open Payments shows $108 in general payments to Dr. Greenfield from 3 companies from 2019 to 2024. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Michael Allen Greenfield been practicing?
Dr. Greenfield graduated from medical school in 1994, 32 years ago.
What insurance does Dr. Michael Allen Greenfield accept?
Dr. Greenfield is in network with 17 carriers, including Aetna, United Healthcare and Blue Cross and Blue Shield of Kansas City. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.
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