Dr. Tomasz K. Grochowalski, MD
- Medicare services, 2024
- 1,031
- Medicare patients, 2024
- 331
- Part D claims, 2024
- 6,142
- MIPS score, 2024
- 81
- Hospital affiliations
- 2
- Practice address
- 360 Essex St Ste 401 Suite 401, Hackensack, NJ 07601
- Practice phone
- Call (551) 996-1140
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Hmhmg Specialty Care
Multi-specialty group site · Hackensack, New Jersey
Find Dr. Grochowalski's 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. Tomasz K. Grochowalski is an internist in Hackensack, New Jersey
Dr. Grochowalski practices at Hmhmg Specialty Care in Hackensack, New Jersey.
Dr. Grochowalski's NPI, 1265495980, was assigned on April 11, 2006. Dr. Grochowalski holds New Jersey license MA065561.
- NPI
- 1265495980NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0244220424
- NPI enumeration date
- April 11, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (551) 996-1140
- 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 Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Tomasz K. Grochowalski practices at Hmhmg Specialty Care in Hackensack, New Jersey
Dr. Grochowalski's primary practice is Hmhmg Specialty Care, at 360 Essex St Ste 401 Suite 401, Hackensack, NJ 07601. The practice phone is (551) 996-1140.
- Hmhmg Specialty Care360 Essex St Ste 401 Suite 401, Hackensack, NJ 07601Phone(551) 996-1140
Source: Dmand AI Affiliation Data
Dr. Tomasz K. Grochowalski is affiliated with 5 sites of care and 1 medical group
Dr. Grochowalski's primary practice is Hmhmg Specialty Care in Hackensack, New Jersey. Dr. Grochowalski is also affiliated with JFK University Medical Center. The medical group on file is Hackensack Meridian Medical Group. Dmand AI also links Dr. Grochowalski to 1 more hospital, 1 physician office and 1 home health agency, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Tomasz K. Grochowalski's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Grochowalski practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Hmhmg Specialty Care | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Tomasz K. Grochowalski is one of 4,226 internists in New Jersey
Internal medicine is Dr. Grochowalski's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Grochowalski is licensed in New Jersey.
Specialties and state licenses
- Internal medicine, New JerseyPrimary
Internists near Dr. Grochowalski
Counts of internists 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. Tomasz K. Grochowalski billed Medicare for 1,031 services in 2024
CMS data shows 1,031 Medicare services from Dr. Grochowalski across 6 procedure codes in 2024, for 331 Medicare patients. Medicare paid $74,945 for them. Every service was in an office.
Dr. Grochowalski's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 9772024: 9831%
- Other services
- 2023: 702024: 3057%
- Tests and treatments
- 2023: 142024: 1829%
Dr. Grochowalski compared with the New Jersey median for internists, 2024
- Dr. Grochowalski
- New Jersey median
- Medicare services
- 1,031vs 72343% above
- Medicare patients
- 331vs 23143% above
- Part D claims
- 5,468vs 8306.6 times
Medians across 4,086 internists in New Jersey with Dmand AI profiles that report each measure.
Dr. Grochowalski'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Grochowalski and other internists in New Jersey.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Tomasz K. Grochowalski treated 331 Medicare patients in 2024, average age 75
CMS counts 331 Medicare patients who saw Dr. Grochowalski in 2024. The largest group is 65 to 74, with 168 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 0.97, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Grochowalski's median patient age at 68, with 50% women.
Dr. Grochowalski's Medicare patients by age, 2024
Dr. Grochowalski's Medicare patients by sex, 2024
- Women18155%
- Men15045%
Chronic conditions among Dr. Grochowalski's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis44%
- Diabetes34%
- Ischemic heart disease31%
- Atrial fibrillation19%
- Cancer18%
- Chronic kidney disease18%
Share of Medicare patients with each condition. A patient can have several.
Dr. Grochowalski's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women50%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Tomasz K. Grochowalski wrote 6,142 Medicare Part D claims in 2024
In 2024, Dr. Grochowalski wrote 6,142 Medicare Part D claims for 583 patients. 92% of them were for generic drugs. CMS names the drug for 5,468 of them, across 83 drugs with 11 or more claims each, at $221,129 in total drug cost. In 2023, CMS named 5,691 claims across 86 drugs.
Dr. Grochowalski's Part D claims by kind of drug, 2024
- Generic5,643 claims92%
- Brand-name478 claims8%
- Other21 claims0%
Dr. Grochowalski'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. Grochowalski's Part D claims, 2024
- Opioids0%13 of 6,142 claims
- Antibiotics1%82 of 6,142 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: 5,6912024: 5,4684%
Drugs named by CMS: 83 in 2024, 86 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. Tomasz K. Grochowalski scored 81 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 81 out of 100 for Dr. Grochowalski for performance year 2024, reported as part of a group. Dr. Grochowalski accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Grochowalski's MIPS scores, performance year 2024
- 81of 100Final score
- 66.4of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 71of 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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Dr. Tomasz K. Grochowalski received $177 in industry payments from 2021 to 2024
CMS Open Payments shows 10 general payments to Dr. Grochowalski from 9 drug and device companies from 2021 to 2024. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $26.
General payments to Dr. Grochowalski by program year, 2021 to 2024
Companies that paid Dr. Grochowalski the most, 2021 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Tomasz K. Grochowalski'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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Tomasz K. Grochowalski
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. Tomasz K. Grochowalski's NPI number?
Dr. Tomasz K. Grochowalski's NPI number is 1265495980. It was assigned on April 11, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Tomasz K. Grochowalski?
Dr. Tomasz K. Grochowalski is an internist in Hackensack, New Jersey. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Tomasz K. Grochowalski practice?
Dr. Grochowalski practices at 360 Essex St Ste 401 Suite 401, Hackensack, NJ 07601. Dr. Grochowalski's primary practice is Hmhmg Specialty Care in Hackensack, New Jersey. Dmand AI also links Dr. Grochowalski to 1 hospital, 1 physician office and 1 home health agency.
What is Dr. Tomasz K. Grochowalski's office phone number?
The practice phone on file for Dr. Grochowalski is (551) 996-1140.
What is Dr. Tomasz K. Grochowalski's medical license number?
Dr. Grochowalski holds New Jersey license MA065561.
Which hospitals is Dr. Tomasz K. Grochowalski affiliated with?
Dr. Grochowalski is affiliated with JFK University Medical Center. Dmand AI links Dr. Grochowalski to 1 more hospital.
What medical group is Dr. Tomasz K. Grochowalski part of?
Dr. Grochowalski is linked to Hackensack Meridian Medical Group.
Does Dr. Tomasz K. Grochowalski accept Medicare?
Yes. CMS data shows Dr. Grochowalski billed Medicare for 1,031 services in 2024, and Dr. Grochowalski accepts Medicare assignment.
What is Dr. Tomasz K. Grochowalski's MIPS score?
Dr. Grochowalski's MIPS final score for performance year 2024 is 81 out of 100, reported as part of a group.
How many Medicare patients does Dr. Tomasz K. Grochowalski see?
CMS counts 331 Medicare patients who saw Dr. Grochowalski in 2024, with an average age of 75.
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What services does Dr. Tomasz K. Grochowalski bill to Medicare?
In 2024, Dr. Grochowalski's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and office visit, established patient (99212).
What drugs does Dr. Tomasz K. Grochowalski prescribe most?
In 2024 Medicare Part D data, Dr. Grochowalski's most prescribed drugs by claims were Amlodipine Besylate, Atorvastatin Calcium and Rosuvastatin Calcium.
Has Dr. Tomasz K. Grochowalski received payments from drug or device companies?
CMS Open Payments shows $177 in general payments to Dr. Grochowalski from 9 companies from 2021 to 2024. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Tomasz K. Grochowalski been practicing?
Dr. Grochowalski graduated from medical school in 1981, 45 years ago.
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