Dr. John L. Niles, MD
- Medicare services, 2024
- 27,010
- Medicare patients, 2024
- 316
- Part D claims, 2024
- 490
- Publications
- 41
- Hospital affiliations
- 5
- Practice address
- 101 Merrimac St, Boston, MA 02114
- Practice phone
- Call (617) 726-4132
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
John L. Niles MD
Boston, Massachusetts
Find Dr. Niles' 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. John L. Niles is a nephrologist in Boston, Massachusetts
Dr. Niles practices at John L. Niles MD in Boston, Massachusetts.
Dr. Niles' NPI, 1316912033, was assigned on February 17, 2006. Dr. Niles graduated from Oregon Health Sciences University School of Medicine in 1981. Dr. Niles holds Massachusetts license 54243.
- NPI
- 1316912033NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2365430063
- NPI enumeration date
- February 17, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (617) 726-4132
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 71
- Medical school graduation
- 1981
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John L. Niles practices at John L. Niles MD in Boston, Massachusetts
Dr. Niles' primary practice is John L. Niles MD, at 101 Merrimac St, Boston, MA 02114 in Suffolk County. The practice phone is (617) 726-4132.
- John L. Niles MD101 Merrimac St, Boston, MA 02114 · Suffolk CountyPhone(617) 726-4132
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. John L. Niles is affiliated with 9 sites of care and 3 medical groups
Dr. Niles' primary practice is John L. Niles MD in Boston, Massachusetts. Dr. Niles is also affiliated with Massachusetts General Hospital. The medical group on file is Massachusetts General Physicians Organization (MGPO). Dmand AI also links Dr. Niles to 4 more hospitals, 3 group practices and clinics and 2 medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. John L. Niles' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Niles practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| John L. Niles MD | Available with a free account |
| +8 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John L. Niles is one of 351 nephrologists in Massachusetts
Nephrology is Dr. Niles' primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Niles is licensed in Massachusetts.
Specialties and state licenses
- Nephrology, MassachusettsPrimary
Nephrologists near Dr. Niles
Counts of nephrologists 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. John L. Niles billed Medicare for 27,010 services in 2024
CMS data shows 27,010 Medicare services from Dr. Niles across 15 procedure codes in 2024, for 316 Medicare patients. Medicare paid $678,593 for them. Every service was in an office.
Dr. Niles' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Other services
- 2023: 18,1752024: 22,89926%
- Drugs given in the office
- 2023: 5,7552024: 1,62572%
- Tests and treatments
- 2023: 1,3492024: 1,2448%
- Lab and pathology
- 2023: 5632024: 83949%
- Office and hospital visits
- 2023: 2492024: 20219%
- Surgery
- 2023: 3632024: 20145%
Dr. Niles compared with the Massachusetts median for nephrologists, 2024
- Dr. Niles
- Massachusetts median
- Medicare services
- 27,010vs 70138.5 times
- Medicare patients
- 316vs 28212% above
- Part D claims
- 303vs 47136% below
Medians across 333 nephrologists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Niles' 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. Niles and other nephrologists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John L. Niles treated 316 Medicare patients in 2024, average age 74
CMS counts 316 Medicare patients who saw Dr. Niles in 2024. The largest group is 65 to 74, with 138 patients. 75% of them have high blood pressure, and 74% have high cholesterol. 11% are also on Medicaid. Their average risk score is 2.16, 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. Niles' median patient age at 67, with 56% women.
Dr. Niles' Medicare patients by age, 2024
Dr. Niles' Medicare patients by sex, 2024
- Women18859%
- Men12841%
Chronic conditions among Dr. Niles' Medicare patients, 2024
- High blood pressure75%
- High cholesterol74%
- Chronic kidney disease73%
- Arthritis47%
- Ischemic heart disease30%
- Anxiety26%
- COPD26%
- Diabetes26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Niles' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women56%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John L. Niles wrote 490 Medicare Part D claims in 2024
In 2024, Dr. Niles wrote 490 Medicare Part D claims for 94 patients. 77% of them were for generic drugs. CMS names the drug for 303 of them, across 17 drugs with 11 or more claims each, at $1,116,022 in total drug cost. In 2023, CMS named 319 claims across 15 drugs.
Dr. Niles' Part D claims by kind of drug, 2024
- Generic376 claims77%
- Brand-name and other114 claims23%
Dr. Niles' 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. Niles' Part D claims, 2024
- Antibiotics7%33 of 490 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: 3192024: 3035%
Drugs named by CMS: 17 in 2024, 15 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. John L. Niles offers telehealth to Medicare patients
Dr. Niles accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Niles as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. John L. Niles has 41 publications on record
Dmand AI links 41 papers to Dr. Niles, published from 2011 to 2025. 2021 was the busiest year, with 6. The most frequent topics are Anti-Neutrophil Cytoplasmic Antibody-Associated Vasculitis, Rituximab and Immunosuppressive Agents. Dr. Niles has published most often in Kidney Int Rep. Dr. Niles' most frequent co-authors are Frank B. Cortazar, MD, Reza Zonozi, MD and Anushya Jeyabalan, MD.
Dr. Niles' papers by year, 2014 to 2025
Topics Dr. Niles writes about most
- Anti-Neutrophil Cytoplasmic Antibody-Associated Vasculitis
- Rituximab
- Immunosuppressive Agents
- Antibodies, Antineutrophil Cytoplasmic
- Autoimmune Diseases
- COVID-19
- Cyclophosphamide
- Glomerulonephritis, Membranous
Dr. Niles' most frequent co-authors
- Frank B. Cortazar, MD18 shared papers
- Reza Zonozi, MD16 shared papers
- Anushya Jeyabalan, MD12 shared papers
Recent publications by Dr. Niles
See who Dr. Niles researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Niles 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. John L. Niles received $15,210 in industry payments from 2016 to 2025
CMS Open Payments shows 46 general payments to Dr. Niles from 5 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 50% of the total. Genentech, Inc. paid the most, $8,064. It also lists 1 research payment totaling $4,847 in 2020.
General payments to Dr. Niles by program year, 2016 to 2025
General payments to Dr. Niles by kind, 2016 to 2025
- Speaker and faculty fees$7,67050%
- Consulting fees$3,69824%
- Travel and lodging$2,19314%
- Food and beverage$1,52210%
- Education$1271%
Companies that paid Dr. Niles the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John L. Niles graduated from Oregon Health Sciences University School of Medicine
Dr. Niles graduated from Oregon Health Sciences University School of Medicine in 1981.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John L. Niles'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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 |
| 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. John L. Niles
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. John L. Niles' NPI number?
Dr. John L. Niles' NPI number is 1316912033. It was assigned on February 17, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John L. Niles?
Dr. John L. Niles is a nephrologist in Boston, Massachusetts. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. John L. Niles practice?
Dr. Niles practices at 101 Merrimac St, Boston, MA 02114. Dr. Niles' primary practice is John L. Niles MD in Boston, Massachusetts. Dmand AI also links Dr. Niles to 4 hospitals, 3 group practices and clinics and 2 medical groups.
What is Dr. John L. Niles' office phone number?
The practice phone on file for Dr. Niles is (617) 726-4132.
What is Dr. John L. Niles' medical license number?
Dr. Niles holds Massachusetts license 54243.
Which hospitals is Dr. John L. Niles affiliated with?
Dr. Niles is affiliated with Massachusetts General Hospital. Dmand AI links Dr. Niles to 4 more hospitals.
What medical group is Dr. John L. Niles part of?
Dr. Niles is linked to Massachusetts General Physicians Organization (MGPO). Dmand AI links Dr. Niles to 2 more medical groups.
Does Dr. John L. Niles accept Medicare?
Yes. CMS data shows Dr. Niles billed Medicare for 27,010 services in 2024, and Dr. Niles accepts Medicare assignment.
Does Dr. John L. Niles offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Niles as offering telehealth services.
How many Medicare patients does Dr. John L. Niles see?
CMS counts 316 Medicare patients who saw Dr. Niles in 2024, with an average age of 74.
Show 7 more questionsShow fewer questions
What services does Dr. John L. Niles bill to Medicare?
In 2024, Dr. Niles' most billed Medicare services were medicare temporary code (Q5115), injected or infused drug (J2919) and infusion or chemotherapy administration (96415).
Where did Dr. John L. Niles go to medical school?
Dr. Niles graduated from Oregon Health Sciences University School of Medicine in 1981.
What drugs does Dr. John L. Niles prescribe most?
In 2024 Medicare Part D data, Dr. Niles' most prescribed drugs by claims were Prednisone, Losartan Potassium and Sulfamethoxazole-Trimethoprim.
Has Dr. John L. Niles received payments from drug or device companies?
CMS Open Payments shows $15,210 in general payments to Dr. Niles from 5 companies from 2016 to 2025. The largest total came from Genentech, Inc.
How long has Dr. John L. Niles been practicing?
Dr. Niles graduated from medical school in 1981, 45 years ago.
Does Dr. John L. Niles do research?
Dmand AI links 41 publications to Dr. Niles, published from 2011 to 2025.
Who does Dr. John L. Niles publish with?
Dr. Niles' most frequent co-authors are Frank B. Cortazar, MD (18 shared papers), Reza Zonozi, MD (16 shared papers) and Anushya Jeyabalan, MD (12 shared papers).
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