Mariusz Niedzwiecki

  • La Mesa, CA
  • Nurse practitioner
NPI1083281679PAC ID7719378504
Medicare patients, 2024
158
Part D claims, 2024
210
MIPS score, 2024
89
Hospital affiliations
1
Medical groups
4
Practice address
5555 Grossmont Center Drive Box 58, La Mesa, CA 91942
Practice phone
Call (619) 465-0711
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Sharp Grossmont Hospital

Hospital · La Mesa, California

See all 5 affiliations

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Mariusz Niedzwiecki is a nurse practitioner in La Mesa, California

Mariusz Niedzwiecki practices at Sharp Grossmont Hospital in La Mesa, California, part of Sharp HealthCare.

Mariusz Niedzwiecki's NPI, 1083281679, was assigned on June 10, 2021. Mariusz Niedzwiecki holds California license 95017485.

NPI and contact details
Medicare PAC ID
7719378504
NPI enumeration date
June 10, 2021
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(619) 465-0711
Professional email
Get email
Personal email
Get email
Mobile number
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Sex
Male
Estimated age
32
Medical school graduation
2020

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Mariusz Niedzwiecki practices at Sharp Grossmont Hospital in La Mesa, California

Mariusz Niedzwiecki's primary practice is Sharp Grossmont Hospital, at 5555 Grossmont Center Drive Box 58, La Mesa, CA 91942 in San Diego County. The practice phone is (619) 465-0711.

  • Sharp Grossmont Hospital
    5555 Grossmont Center Drive Box 58, La Mesa, CA 91942 · San Diego CountyPhone(619) 465-0711

Source: Dmand AI Affiliation Data

Mariusz Niedzwiecki is affiliated with 1 site of care and 4 medical groups

Mariusz Niedzwiecki's primary practice is Sharp Grossmont Hospital in La Mesa, California, part of Sharp HealthCare. The medical group on file is Sharp Rees-Stealy Medical Group. Dmand AI also links Mariusz Niedzwiecki to 3 more medical groups, each named with a free account.

See all 5 affiliations for Mariusz Niedzwiecki

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Mariusz Niedzwiecki's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Mariusz Niedzwiecki practices. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Sharp Grossmont HospitalAvailable with a free account
+3 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Mariusz Niedzwiecki is one of 5,983 nurse practitioners in California

Nurse practitioner is Mariusz Niedzwiecki's primary specialty in the NPI Registry, under taxonomy code 363L00000X. Mariusz Niedzwiecki is licensed in California.

Specialties and state licenses

  • Nurse practitioner, CaliforniaPrimaryLicense 95017485 · taxonomy 363L00000X

Nurse practitioners near Mariusz Niedzwiecki

Counts of nurse practitioners 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

Mariusz Niedzwiecki treated 158 Medicare patients in 2024, average age 74

CMS counts 158 Medicare patients who saw Mariusz Niedzwiecki in 2024. The largest group is 65 to 74, with 63 patients. 75% of them have high blood pressure, and 63% have high cholesterol. 27% are also on Medicaid. Their average risk score is 1.03, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Mariusz Niedzwiecki's median patient age at 34, with 59% women.

Medicare patients, 2024158
Average age74
Average risk score1.03
Also on Medicaid27%

Mariusz Niedzwiecki's Medicare patients by age, 2024

Mariusz Niedzwiecki's Medicare patients by sex, 2024

  • Women9761%
  • Men6139%

Chronic conditions among Mariusz Niedzwiecki's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol63%
  3. Arthritis48%
  4. Diabetes33%
  5. Chronic kidney disease23%
  6. Mood disorders21%
  7. Ischemic heart disease20%
  8. Anxiety19%

Share of Medicare patients with each condition. A patient can have several.

Mariusz Niedzwiecki's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 34

Patient panel by sex, all payers

  • Women59%
  • Men40%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Mariusz Niedzwiecki wrote 210 Medicare Part D claims in 2024

In 2024, Mariusz Niedzwiecki wrote 210 Medicare Part D claims for 139 patients. 90% of them were for generic drugs.

Part D claims, 2024210
Part D patients139

Mariusz Niedzwiecki's Part D claims by kind of drug, 2024

  • Generic188 claims90%
  • Brand-name22 claims10%

Drug classes CMS tracks in Mariusz Niedzwiecki's Part D claims, 2024

  • Opioids6%12 of 210 claims
  • Antibiotics35%74 of 210 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data

Mariusz Niedzwiecki scored 89 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Mariusz Niedzwiecki for performance year 2024, reported as part of a group. Mariusz Niedzwiecki accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Mariusz Niedzwiecki's MIPS scores, performance year 2024

  • 89of 100Final score
  • 81of 100Quality
  • 99of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 82of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

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Sources for Mariusz Niedzwiecki's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Mariusz Niedzwiecki

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Mariusz Niedzwiecki's NPI number?

Mariusz Niedzwiecki's NPI number is 1083281679. It was assigned on June 10, 2021, and it is active in the NPI Registry.

What does Mariusz Niedzwiecki specialize in?

Mariusz Niedzwiecki is a nurse practitioner in La Mesa, California. The primary specialty in the NPI Registry is Nurse Practitioner (taxonomy code 363L00000X).

Where does Mariusz Niedzwiecki practice?

Mariusz Niedzwiecki practices at 5555 Grossmont Center Drive Box 58, La Mesa, CA 91942. Mariusz Niedzwiecki's primary practice is Sharp Grossmont Hospital in La Mesa, California, part of Sharp HealthCare. Dmand AI also links Mariusz Niedzwiecki to 3 medical groups.

What is Mariusz Niedzwiecki's office phone number?

The practice phone on file for Mariusz Niedzwiecki is (619) 465-0711.

What is Mariusz Niedzwiecki's medical license number?

Mariusz Niedzwiecki holds California license 95017485.

Which hospitals is Mariusz Niedzwiecki affiliated with?

Mariusz Niedzwiecki practices at Sharp Grossmont Hospital in La Mesa, California.

What medical group is Mariusz Niedzwiecki part of?

Mariusz Niedzwiecki is linked to Sharp Rees-Stealy Medical Group. Dmand AI links Mariusz Niedzwiecki to 3 more medical groups.

Does Mariusz Niedzwiecki accept Medicare?

Yes. CMS lists Mariusz Niedzwiecki as accepting Medicare assignment.

What is Mariusz Niedzwiecki's MIPS score?

Mariusz Niedzwiecki's MIPS final score for performance year 2024 is 89 out of 100, reported as part of a group.

How many Medicare patients does Mariusz Niedzwiecki see?

CMS counts 158 Medicare patients who saw Mariusz Niedzwiecki in 2024, with an average age of 74.

How long has Mariusz Niedzwiecki been practicing?

Mariusz Niedzwiecki graduated from medical school in 2020, 6 years ago.

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