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Dr. Melanie Greenan, MD
NPI1790783348PAC ID4880624923
- Medicare services, 2024
- 2,094
- Medicare patients, 2024
- 665
- Part D claims, 2024
- 1,105
- Publications
- 1
- Hospital affiliations
- 5
- Practice address
- 89 Lewis Bay Rd, Hyannis, MA 02601
- Practice phone
- Call (617) 739-7100
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Commonwealth Nephrology Associates
Primary care practice · Hyannis, Massachusetts
Find Dr. Greenan's professional email, personal email and mobile number
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Dr. Melanie Greenan is a nephrologist in Hyannis, Massachusetts
Dr. Greenan practices at Commonwealth Nephrology Associates in Hyannis, Massachusetts.
Dr. Greenan's NPI, 1790783348, was assigned on July 8, 2005. Dr. Greenan graduated from The Warren Alpert Medical School of Brown University in 2000. Dr. Greenan holds Massachusetts license 224307.
NPI and contact details
- NPI
- 1790783348NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4880624923
- NPI enumeration date
- July 8, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (617) 739-7100
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Melanie Greenan practices at Commonwealth Nephrology Associates in Hyannis, Massachusetts
Dr. Greenan's primary practice is Commonwealth Nephrology Associates, at 89 Lewis Bay Rd, Hyannis, MA 02601. The practice phone is (617) 739-7100.
- Commonwealth Nephrology Associates89 Lewis Bay Rd, Hyannis, MA 02601Phone(617) 739-7100
Source: Dmand AI Affiliation Data
Dr. Melanie Greenan is affiliated with 12 sites of care and 4 medical groups
Dr. Greenan's primary practice is Commonwealth Nephrology Associates in Hyannis, Massachusetts. Dr. Greenan is also affiliated with Cape Cod Hospital. The medical group on file is Commonwealth Nephrology Associates. Dmand AI also links Dr. Greenan to 4 more hospitals, 4 dialysis centers, 3 medical groups and 2 group practices and clinics, each named with a free account.
Commonwealth Nephrology AssociatesPrimary
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Melanie Greenan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Greenan practices, 12 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Commonwealth Nephrology Associates | Available with a free account |
| +11 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Melanie Greenan is one of 351 nephrologists in Massachusetts
Nephrology is Dr. Greenan's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Greenan is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Greenan's licenses on file in 2 states: Massachusetts and Rhode Island.
Specialties and state licenses
- Nephrology, MassachusettsPrimary
- Rhode Island license
Clinical focus
Dmand AI lists acute kidney failure, chronic anemia, chronic kidney disease, fluid and electrolyte imbalances and parathyroid gland disorder among the conditions Dr. Greenan treats.
Nephrologists near Dr. Greenan
Counts of nephrologists with a Dmand AI profile, by place and practice. Each opens the list.
351nephrologists in Massachusetts
3nephrologists in Hyannis
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Melanie Greenan billed Medicare for 2,094 services in 2024
CMS data shows 2,094 Medicare services from Dr. Greenan across 12 procedure codes in 2024, for 665 Medicare patients. Medicare paid $210,654 for them.
Medicare services, 20242,094
Medicare patients665
Paid by Medicare$210,654
Procedure codes12
Dr. Greenan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6762024: 95041%
- Other services
- 2023: 02024: 686
- Tests and treatments
- 2023: 2912024: 45857%
Where Dr. Greenan's Medicare services took place, 2024
- In an office2,07599%
- In a facility191%
Dr. Greenan compared with the Massachusetts median for nephrologists, 2024
- Dr. Greenan
- Massachusetts median
- Medicare services
- 2,094vs 7013.0 times
- Medicare patients
- 665vs 2822.4 times
- Part D claims
- 872vs 47185% above
Medians across 333 nephrologists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Greenan'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. Greenan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Greenan and other nephrologists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Melanie Greenan treated 665 Medicare patients in 2024, average age 77
CMS counts 665 Medicare patients who saw Dr. Greenan in 2024. The largest group is 75 to 84, with 295 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 18% are also on Medicaid. Their average risk score is 2.44, 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. Greenan's median patient age at 77, with 42% women.
Medicare patients, 2024665
Average age77
Average risk score2.44
Also on Medicaid18%
Dr. Greenan's Medicare patients by age, 2024
Dr. Greenan's Medicare patients by sex, 2024
- Women27942%
- Men38658%
Chronic conditions among Dr. Greenan's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Arthritis49%
- Ischemic heart disease48%
- Diabetes46%
- Heart failure38%
- Atrial fibrillation31%
Share of Medicare patients with each condition. A patient can have several.
Dr. Greenan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 77
Patient panel by sex, all payers
- Women42%
- Men57%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Melanie Greenan wrote 1,105 Medicare Part D claims in 2024
In 2024, Dr. Greenan wrote 1,105 Medicare Part D claims for 256 patients. 79% of them were for generic drugs. CMS names the drug for 872 of them, across 18 drugs with 11 or more claims each, at $347,733 in total drug cost. In 2023, CMS named 683 claims across 18 drugs.
Part D claims, 20241,105
Drugs named by CMS18
Total drug cost$347,733
Part D patients256
Dr. Greenan's Part D claims by kind of drug, 2024
- Generic872 claims79%
- Brand-name233 claims21%
Dr. Greenan'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. Greenan's Part D claims, 2024
- Antibiotics1%14 of 1,105 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: 6832024: 87228%
Drugs named by CMS: 18 in 2024, 18 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. Melanie Greenan takes part in Medicare
Dr. Greenan 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. Melanie Greenan has 1 publication on record
Dmand AI links 1 paper to Dr. Greenan. Dr. Greenan's most frequent co-author is Douglas G. Shemin, MD.
Papers1
Dr. Greenan's most frequent co-authors
Recent publications by Dr. Greenan
See who Dr. Greenan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Greenan works with, so you can find a warm path to the right nephrologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Melanie Greenan received $859 in industry payments from 2019 to 2025
CMS Open Payments shows 23 general payments to Dr. Greenan from 7 drug and device companies from 2019 to 2025. Food and beverage make up the largest share, 56% of the total. Vantive US Healthcare LLC paid the most, $629.
General payments to Dr. Greenan by program year, 2019 to 2025
General payments to Dr. Greenan by kind, 2019 to 2025
$859in total
- Food and beverage$47956%
- Travel and lodging$32238%
- Education$587%
Companies that paid Dr. Greenan the most, 2019 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Melanie Greenan graduated from The Warren Alpert Medical School of Brown University
Dr. Greenan graduated from The Warren Alpert Medical School of Brown University in 2000.
- Medical school
- Board certified in internal medicine
- Board certified in nephrology
Source: Dmand AI Professional Profile Data
Dr. Melanie Greenan accepts plans from 2 insurance carriers
Dr. Greenan is in network with 2 carriers, including Aetna and CMS Medicare. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.
- Aetna
- CMS Medicare
Plan types Dr. Greenan accepts, by number of carriers
- Medicare2
- EPO1
- HMO1
- POS1
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Melanie Greenan'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) |
| 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. Melanie Greenan
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. Melanie Greenan's NPI number?
Dr. Melanie Greenan's NPI number is 1790783348. It was assigned on July 8, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Melanie Greenan?
Dr. Melanie Greenan is a nephrologist in Hyannis, Massachusetts. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Melanie Greenan practice?
Dr. Greenan practices at 89 Lewis Bay Rd, Hyannis, MA 02601. Dr. Greenan's primary practice is Commonwealth Nephrology Associates in Hyannis, Massachusetts. Dmand AI also links Dr. Greenan to 4 hospitals, 4 dialysis centers, 3 medical groups and 2 group practices and clinics.
What is Dr. Melanie Greenan's office phone number?
The practice phone on file for Dr. Greenan is (617) 739-7100.
What is Dr. Melanie Greenan's medical license number?
Dr. Greenan holds Massachusetts license 224307, one of the licenses on file in 2 states.
Which states has Dr. Melanie Greenan been licensed in?
Dmand AI has state licenses on file for Dr. Greenan in Massachusetts (2005 to 2026) and Rhode Island (2005 to 2006).
Which hospitals is Dr. Melanie Greenan affiliated with?
Dr. Greenan is affiliated with Cape Cod Hospital. Dmand AI links Dr. Greenan to 4 more hospitals.
What medical group is Dr. Melanie Greenan part of?
Dr. Greenan is linked to Commonwealth Nephrology Associates. Dmand AI links Dr. Greenan to 3 more medical groups.
Does Dr. Melanie Greenan accept Medicare?
Yes. CMS data shows Dr. Greenan billed Medicare for 2,094 services in 2024, and Dr. Greenan accepts Medicare assignment.
How many Medicare patients does Dr. Melanie Greenan see?
CMS counts 665 Medicare patients who saw Dr. Greenan in 2024, with an average age of 77.
Show 9 more questionsShow fewer questions
Is Dr. Melanie Greenan board certified?
Yes. Dr. Greenan is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Melanie Greenan bill to Medicare?
In 2024, Dr. Greenan's most billed Medicare services were medicare service (G2211), office visit, established patient (99213) and office visit, established patient (99214).
Where did Dr. Melanie Greenan go to medical school?
Dr. Greenan graduated from The Warren Alpert Medical School of Brown University in 2000.
What drugs does Dr. Melanie Greenan prescribe most?
In 2024 Medicare Part D data, Dr. Greenan's most prescribed drugs by claims were Farxiga, Sevelamer Carbonate and Furosemide.
Has Dr. Melanie Greenan received payments from drug or device companies?
CMS Open Payments shows $859 in general payments to Dr. Greenan from 7 companies from 2019 to 2025. The largest total came from Vantive US Healthcare LLC.
How long has Dr. Melanie Greenan been practicing?
Dr. Greenan graduated from medical school in 2000, 26 years ago.
Does Dr. Melanie Greenan do research?
Dmand AI links 1 publication to Dr. Greenan.
Who does Dr. Melanie Greenan publish with?
Dr. Greenan's most frequent co-authors are Douglas G. Shemin, MD (1 shared paper).
What insurance does Dr. Melanie Greenan accept?
Dr. Greenan is in network with 2 carriers, including Aetna and CMS Medicare. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.
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