John Patrick Aguilar Sia, MD
Nephrology Physician · Manchester, NH
John Patrick Aguilar Sia, MD is a nephrology physician with a practice address in Manchester, New Hampshire, and NPI 1255597464, issued on Aug 6, 2008. Check the license (New Hampshire 17413, as entered in NPPES) on the New Hampshire Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- John Patrick Aguilar Sia
- Credential
- MD
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 17413 NH
Self-reported in NPPES; status is on the state search - Practice location
- 1750 Elm Street, Manchester, NH 03104
- Phone
- (603) 621-2948
- Enumerated
- Aug 6, 2008
- Record last updated
- Apr 28, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (603) 621-4126
- Medicare enrollment
- Enrolled (PECOS I20160324001449); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 37 in New Hampshire → Look up another NPI →
Also registered at 1750 Elm Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Peter Cheung, M.D.Nephrology Physician1861480162
- David Friedenberg, D.O.Nephrology Physician1710975016
Verify John Patrick Aguilar Sia in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Hampshire Board of Medicine
Search for license 17413Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
21% fewer Medicare Part D claims than the average nephrology physician in 2024
1,158 Medicare Part D claims for 243 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims.
Most prescribed
- Sevelamer Carbonate130 claims
- Furosemide79 claims
- Amlodipine Besylate74 claims
- Farxiga73 claims
- Lisinopril72 claims
- Losartan Potassium65 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): 87.8 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: $7,642.49
45 payments; by number, the most common kind was food and beverage; the largest payer was Boehringer Ingelheim Pharmaceuticals, 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
- Nephrology Associates, P. A.Concord, NH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Patrick Aguilar Sia among 37 nephrology physician records in New Hampshire
John Patrick Aguilar Sia, MD 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 2008, is newer than 62% of them.
- NPI issued2008 · 62% of these records are older, 32% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 84% of these records are
- Graduated2006 · median 2001 among the 31 with a school on file
- Record last updated2016 · 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 Manchester → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Peter Cheung, M.D.Manchester, NH 031041861480162
- David Friedenberg, D.O.Manchester, NH 031041710975016
- Marilena Caldarusa, M.D.Manchester, NH 031021689899270
- Kevin Meyer, MDManchester, NH 031021154450310
- Ana Stankovic, MD FACP FASN FASHSalem, NH 030791992794515
- Sean Fitzpatrick, MDNashua, NH 030601831269299
- Siddharth Mehta, M.DNashua, NH 030601104318617
- Jill Melendez Young, MDNashua, NH 030601184628158
Common questions
What is John Patrick Aguilar Sia, MD's NPI number?
John Patrick Aguilar Sia, MD's National Provider Identifier (NPI) is 1255597464, issued on Aug 6, 2008. An NPI identifies a provider in billing; it is not a license.
Where is John Patrick Aguilar Sia, MD located?
The NPPES record lists a practice address at 1750 Elm Street, Manchester, NH, 03104. Phone: (603) 621-2948. Providers update this record themselves, so call before visiting.
How can I verify John Patrick Aguilar Sia, MD's license?
NPPES lists New Hampshire license number 17413, 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 John Patrick Aguilar Sia, MD prescribe under Medicare Part D?
In 2024, John Patrick Aguilar Sia, MD had 1,158 Medicare Part D claims for 243 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.
What is John Patrick Aguilar Sia, MD's MIPS final score?
The 2023 MIPS final score is 87.8 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.