Dr. Mark S. Grajcar, DO
- Medicare services, 2016
- 689
- Part D claims, 2024
- 1,217
- Hospital affiliations
- 1
- Industry payments
- $4,486
- Medical groups
- 2
- Practice address
- 190 East Bannock Street, Boise, ID 83712
- Practice phone
- Call (208) 381-2222
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Grajcar'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. Mark S. Grajcar is a family medicine physician in Boise, Idaho
Dr. Grajcar practices at St. Luke's Boise Medical Center in Boise, Idaho, part of St. Luke's Health System.
Dr. Grajcar's NPI, 1669416137, was assigned on June 15, 2006. Dr. Grajcar holds Idaho license O127.
- NPI
- 1669416137NPI Registry (opens in a new tab)
- NPI enumeration date
- June 15, 2006
- NPI status
- Active
- Practice phone
- (208) 381-2222
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Mark S. Grajcar practices at St. Luke's Boise Medical Center in Boise, Idaho
Dr. Grajcar's primary practice is St. Luke's Boise Medical Center, at 190 East Bannock Street, Boise, ID 83712 in Ada County. The practice phone is (208) 381-2222.
- St. Luke's Boise Medical Center190 East Bannock Street, Boise, ID 83712 · Ada CountyPhone(208) 381-2222
Source: Dmand AI Affiliation Data
Dr. Mark S. Grajcar is affiliated with 4 sites of care and 2 medical groups
Dr. Grajcar's primary practice is St. Luke's Boise Medical Center in Boise, Idaho, part of St. Luke's Health System. Dmand AI also links Dr. Grajcar to 2 group practices and clinics, 2 medical groups and 1 breast imaging center, 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. Mark S. Grajcar's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Grajcar practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| St. Luke's Boise Medical Center | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark S. Grajcar is one of 1,133 family medicine physicians in Idaho
Family medicine is Dr. Grajcar's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Grajcar is licensed in Idaho.
Specialties and state licenses
- Family medicine, IdahoPrimary
Family medicine physicians near Dr. Grajcar
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. Mark S. Grajcar billed Medicare for 689 services in 2016
CMS data shows 689 Medicare services from Dr. Grajcar across 10 procedure codes in 2016. Medicare paid $22,468 for them. Every service was in an office.
Dr. Grajcar's Medicare services by type, 2016
- Office and hospital visits350
- Surgery149
- Lab and pathology124
- Other services35
- Tests and treatments31
Dr. Grajcar compared with the Idaho median for family medicine physicians, 2016
- Dr. Grajcar
- Idaho median
- Medicare services
- 689vs 2103.3 times
- Part D claims
- 884vs 884Close to median
Medians across 1,101 family medicine physicians in Idaho with Dmand AI profiles that report each measure.
Dr. Grajcar's most billed Medicare procedure codes, 2016
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. Grajcar?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Grajcar and other family medicine physicians in Idaho.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark S. Grajcar's patients have a median age of 59
Across all payers, Dmand AI patient panel data puts Dr. Grajcar's median patient age at 59, with 40% women.
Dr. Grajcar's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women40%
- Men60%
Source: Dmand AI Patient Panel Data
Dr. Mark S. Grajcar wrote 1,217 Medicare Part D claims in 2024
In 2024, Dr. Grajcar wrote 1,217 Medicare Part D claims for 101 patients. 86% of them were for generic drugs. CMS names the drug for 884 of them, across 39 drugs with 11 or more claims each, at $113,864 in total drug cost. In 2023, CMS named 721 claims across 31 drugs.
Dr. Grajcar's Part D claims by kind of drug, 2024
- Generic1,049 claims86%
- Brand-name and other168 claims14%
Dr. Grajcar'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. Grajcar's Part D claims, 2024
- Opioids2%23 of 1,217 claims
- Antibiotics3%39 of 1,217 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: 7212024: 88423%
Drugs named by CMS: 39 in 2024, 31 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
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Dr. Mark S. Grajcar received $4,486 in industry payments from 2016 to 2025
CMS Open Payments shows 264 general payments to Dr. Grajcar from 44 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $650.
General payments to Dr. Grajcar by program year, 2016 to 2025
Companies that paid Dr. Grajcar the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Mark S. Grajcar'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 Data |
| 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) |
| 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. Mark S. Grajcar
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. Mark S. Grajcar's NPI number?
Dr. Mark S. Grajcar's NPI number is 1669416137. It was assigned on June 15, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark S. Grajcar?
Dr. Mark S. Grajcar is a family medicine physician in Boise, Idaho. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Mark S. Grajcar practice?
Dr. Grajcar practices at 190 East Bannock Street, Boise, ID 83712. Dr. Grajcar's primary practice is St. Luke's Boise Medical Center in Boise, Idaho, part of St. Luke's Health System. Dmand AI also links Dr. Grajcar to 2 group practices and clinics, 2 medical groups and 1 breast imaging center.
What is Dr. Mark S. Grajcar's office phone number?
The practice phone on file for Dr. Grajcar is (208) 381-2222.
What is Dr. Mark S. Grajcar's medical license number?
Dr. Grajcar holds Idaho license O127.
Which hospitals is Dr. Mark S. Grajcar affiliated with?
Dr. Grajcar practices at St. Luke's Boise Medical Center in Boise, Idaho.
Does Dr. Mark S. Grajcar accept Medicare?
Yes. CMS data shows Dr. Grajcar billed Medicare for 689 services in 2016.
What services does Dr. Mark S. Grajcar bill to Medicare?
In 2016, Dr. Grajcar's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and surgery: heart and blood vessels (36415).
What drugs does Dr. Mark S. Grajcar prescribe most?
In 2024 Medicare Part D data, Dr. Grajcar's most prescribed drugs by claims were Levothyroxine Sodium, Rosuvastatin Calcium and Atorvastatin Calcium.
Has Dr. Mark S. Grajcar received payments from drug or device companies?
CMS Open Payments shows $4,486 in general payments to Dr. Grajcar from 44 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Mark S. Grajcar been practicing?
Dr. Grajcar's NPI was assigned in 2006.
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