Michael Casimir Danielski, M.D.
Nephrology Physician · Portsmouth, NH
Michael Casimir Danielski, M.D. is a nephrology physician with a practice address in Portsmouth, New Hampshire, and NPI 1114918984, issued on Nov 2, 2005. Check the license (New Hampshire 12025, as entered in NPPES) on the New Hampshire Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Michael Casimir Danielski
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 12025 NH
Self-reported in NPPES; status is on the state search - Practice location
- 875 Greenland RD, Portsmouth, NH 03801
- Phone
- (603) 436-3433
- Enumerated
- Nov 2, 2005
- Record last updated
- Mar 20, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (603) 427-5115
- Medicaid IDs
- 30204007 NH
268480099 ME - Medicare enrollment
- Enrolled (PECOS I20050302000848); accepts Medicare assignment
- Medical or professional school
- University Of Vermont College Of Medicine, 1998
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 37 in New Hampshire → Look up another NPI →
Also registered at 875 Greenland RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Michael Casimir Danielski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Hampshire Board of Medicine
Search for license 12025Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
42% fewer Medicare Part D claims than the average nephrology physician in 2024
856 Medicare Part D claims for 168 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 3% of claims.
Most prescribed
- Calcitriol188 claims
- Amlodipine Besylate88 claims
- Losartan Potassium71 claims
- Lisinopril63 claims
- Furosemide44 claims
- Metoprolol Succinate35 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 90.1 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $77.40
1 payment: food and beverage; the largest payer was Calliditas Therapeutics US Inc. The 8,230 providers of this specialty with any payment received $3,091.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Seacoast Kidney And Hypertension Specialists, P.L.L.C.Portsmouth, NH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Casimir Danielski among 37 nephrology physician records in New Hampshire
Michael Casimir Danielski, M.D. is one of 37 nephrology physician records with a practice address in New Hampshire. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 76% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 84% of these records are
- Graduated1998 · median 2001 among the 31 with a school on file
- Record last updated2012 · 73% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a New Hampshire practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in New Hampshire
There are 37 nephrology physician records in New Hampshire.
All 37 in New Hampshire → Every provider in Portsmouth → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Kulli Barrett, M.D.Portsmouth, NH 038011437140209
- Satyaki Chakrabarty, MDPortsmouth, NH 038011457846891
- Sucharit Joshi, M.D.Portsmouth, NH 038011114045184
- Shiv Kumar, MDPortsmouth, NH 038011326076555
- Naresh Matta, M.D.Portsmouth, NH 038011801850367
- Clay Block, M.D.Lebanon, NH 037561962593608
- Elizabeth Brant, M.D.Lebanon, NH 037561275700049
- Temi-Ete Ediale, M.DLebanon, NH 037561790303782
Common questions
What is Michael Casimir Danielski, M.D.'s NPI number?
Michael Casimir Danielski, M.D.'s National Provider Identifier (NPI) is 1114918984, issued on Nov 2, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Michael Casimir Danielski, M.D. located?
The NPPES record lists a practice address at 875 Greenland RD, Portsmouth, NH, 03801. Phone: (603) 436-3433. Providers update this record themselves, so call before visiting.
How can I verify Michael Casimir Danielski, M.D.'s license?
NPPES lists New Hampshire license number 12025, as entered by the provider. Search the New Hampshire Board of Medicine at https://www.oplc.nh.gov/board-medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michael Casimir Danielski, M.D. prescribe under Medicare Part D?
In 2024, Michael Casimir Danielski, M.D. had 856 Medicare Part D claims for 168 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.
What is Michael Casimir Danielski, M.D.'s MIPS final score?
The 2023 MIPS final score is 90.1 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.