Dr. William Anthony Gromko Jr., MD
- Medicare services, 2024
- 665
- Medicare patients, 2024
- 145
- Part D claims, 2024
- 3,069
- Industry payments
- $2,357
- Affiliated sites
- 2
- Practice address
- 308 E Third St, Libby, MT 59923
- Practice phone
- Call (406) 293-6285
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Libby Care Center of Cascadia
Skilled Nursing Facility · Libby, Montana
Find Dr. Gromko'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. William Anthony Gromko Jr. is a family medicine physician in Libby, Montana
Dr. Gromko practices at Libby Care Center of Cascadia in Libby, Montana.
Dr. Gromko's NPI, 1477565026, was assigned on August 12, 2006. Dr. Gromko graduated from Creighton University School of Medicine in 1974. Dr. Gromko holds Oregon license MD204079.
- NPI
- 1477565026NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8325189996
- NPI enumeration date
- August 12, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (406) 293-6285
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 78
- Medical school graduation
- 1974
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William Anthony Gromko Jr. practices at Libby Care Center of Cascadia in Libby, Montana
Dr. Gromko's primary practice is Libby Care Center of Cascadia, at 308 E Third St, Libby, MT 59923 in Lincoln County. The practice phone is (406) 293-6285.
- Libby Care Center of Cascadia308 E Third St, Libby, MT 59923 · Lincoln CountyPhone(406) 293-6285
Source: Dmand AI Affiliation Data
Dr. William Anthony Gromko Jr. is affiliated with 2 sites of care and 2 medical groups
Dr. Gromko's primary practice is Libby Care Center of Cascadia in Libby, Montana. The medical group on file is Family Health and Wellness. Dmand AI also links Dr. Gromko to 1 more group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William Anthony Gromko Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gromko practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Libby Care Center of Cascadia | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William Anthony Gromko Jr. is one of 675 family medicine physicians in Montana
Family medicine is Dr. Gromko's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dmand AI has Dr. Gromko's licenses on file in 3 states: Oregon, Minnesota and Washington.
Specialties and state licenses
- Family medicine, OregonPrimary
- Minnesota license
- Washington license
Family medicine physicians near Dr. Gromko
Counts of family medicine physicians 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. William Anthony Gromko Jr. billed Medicare for 665 services in 2024
CMS data shows 665 Medicare services from Dr. Gromko across 14 procedure codes in 2024, for 145 Medicare patients. Medicare paid $27,385 for them. Every service was in an office.
Dr. Gromko's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3912024: 29624%
- Lab and pathology
- 2023: 1142024: 21185%
- Surgery
- 2023: 1002024: 8119%
- Other services
- 2023: 252024: 4372%
- Tests and treatments
- 2023: 02024: 34
Dr. Gromko compared with the Montana median for family medicine physicians, 2024
- Dr. Gromko
- Montana median
- Medicare services
- 665vs 3042.2 times
- Medicare patients
- 145vs 17216% below
- Part D claims
- 2,565vs 7523.4 times
Medians across 706 family medicine physicians in Montana with Dmand AI profiles that report each measure.
Dr. Gromko'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.
Need commercial claims for Dr. Gromko?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Gromko and other family medicine physicians in Montana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William Anthony Gromko Jr. treated 145 Medicare patients in 2024, average age 71
CMS counts 145 Medicare patients who saw Dr. Gromko in 2024. The largest group is 65 to 74, with 75 patients. 60% of them have high blood pressure, and 43% have arthritis. 16% are also on Medicaid. Their average risk score is 1.09, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Gromko's median patient age at 69, with 52% women.
Dr. Gromko's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Gromko's Medicare patients by sex, 2024
- Women7048%
- Men7552%
Chronic conditions among Dr. Gromko's Medicare patients, 2024
- High blood pressure60%
- Arthritis43%
- High cholesterol38%
- Diabetes20%
- Ischemic heart disease19%
- Mood disorders19%
- Anxiety17%
- Chronic kidney disease17%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gromko's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women52%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William Anthony Gromko Jr. wrote 3,069 Medicare Part D claims in 2024
In 2024, Dr. Gromko wrote 3,069 Medicare Part D claims for 250 patients. 90% of them were for generic drugs. CMS names the drug for 2,565 of them, across 75 drugs with 11 or more claims each, at $120,481 in total drug cost. In 2023, CMS named 2,106 claims across 69 drugs.
Dr. Gromko's Part D claims by kind of drug, 2024
- Generic2,770 claims90%
- Brand-name and other299 claims10%
Dr. Gromko'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. Gromko's Part D claims, 2024
- Opioids10%315 of 3,069 claims
- Antibiotics3%102 of 3,069 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: 2,1062024: 2,56522%
Drugs named by CMS: 75 in 2024, 69 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
How Dr. William Anthony Gromko Jr. takes part in Medicare
Dr. Gromko accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. William Anthony Gromko Jr. received $2,357 in industry payments from 2016 to 2019
CMS Open Payments shows 289 general payments to Dr. Gromko from 12 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 99% of the total. Novo Nordisk Inc paid the most, $1,017.
General payments to Dr. Gromko by program year, 2016 to 2019
General payments to Dr. Gromko by kind, 2016 to 2019
- Food and beverage$2,32599%
- Education$311%
Companies that paid Dr. Gromko the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William Anthony Gromko Jr. graduated from Creighton University School of Medicine
Dr. Gromko graduated from Creighton University School of Medicine in 1974.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William Anthony Gromko Jr.'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 DataDmand AI Org Hierarchy 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) |
| 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. William Anthony Gromko Jr.
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. William Anthony Gromko Jr.'s NPI number?
Dr. William Anthony Gromko Jr.'s NPI number is 1477565026. It was assigned on August 12, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William Anthony Gromko Jr.?
Dr. William Anthony Gromko Jr. is a family medicine physician in Libby, Montana. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. William Anthony Gromko Jr. practice?
Dr. Gromko practices at 308 E Third St, Libby, MT 59923. Dr. Gromko's primary practice is Libby Care Center of Cascadia in Libby, Montana. Dmand AI also links Dr. Gromko to 1 group practice or clinic and 1 medical group.
What is Dr. William Anthony Gromko Jr.'s office phone number?
The practice phone on file for Dr. Gromko is (406) 293-6285.
What is Dr. William Anthony Gromko Jr.'s medical license number?
Dr. Gromko holds Oregon license MD204079, one of the licenses on file in 3 states.
Which states has Dr. William Anthony Gromko Jr. been licensed in?
Dmand AI has state licenses on file for Dr. Gromko in Oregon, Minnesota and Washington.
What medical group is Dr. William Anthony Gromko Jr. part of?
Dr. Gromko is linked to Family Health and Wellness. Dmand AI links Dr. Gromko to 1 more medical group.
Does Dr. William Anthony Gromko Jr. accept Medicare?
Yes. CMS data shows Dr. Gromko billed Medicare for 665 services in 2024, and Dr. Gromko accepts Medicare assignment.
How many Medicare patients does Dr. William Anthony Gromko Jr. see?
CMS counts 145 Medicare patients who saw Dr. Gromko in 2024, with an average age of 71.
What services does Dr. William Anthony Gromko Jr. bill to Medicare?
In 2024, Dr. Gromko's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and surgery: heart and blood vessels (36415).
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Where did Dr. William Anthony Gromko Jr. go to medical school?
Dr. Gromko graduated from Creighton University School of Medicine in 1974.
What drugs does Dr. William Anthony Gromko Jr. prescribe most?
In 2024 Medicare Part D data, Dr. Gromko's most prescribed drugs by claims were Lisinopril, Oxycodone HCl and Atorvastatin Calcium.
Has Dr. William Anthony Gromko Jr. received payments from drug or device companies?
CMS Open Payments shows $2,357 in general payments to Dr. Gromko from 12 companies from 2016 to 2019. The largest total came from Novo Nordisk Inc.
How long has Dr. William Anthony Gromko Jr. been practicing?
Dr. Gromko graduated from medical school in 1974, 52 years ago.
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