Dr. Mark M. Grohman, DO
- Medicare services, 2024
- 123
- Medicare patients, 2024
- 73
- Part D claims, 2024
- 38
- MIPS score, 2024
- 82
- Hospital affiliations
- 1
- Practice address
- 175 Fore River Pkwy, Portland, ME 04102
- Practice phone
- Call (207) 879-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Northern Light Mercy Hospital
Portland, Maine
Find Dr. Grohman'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 M. Grohman is a hospitalist in Portland, Maine
Dr. Grohman practices at Northern Light Mercy Hospital in Portland, Maine.
Dr. Grohman's NPI, 1538393541, was assigned on May 5, 2009. Dr. Grohman graduated from University of New England, College of Osteo Medicine in 2009. Dr. Grohman holds Maine license DO2294.
- NPI
- 1538393541NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4688820558
- NPI enumeration date
- May 5, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (207) 879-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark M. Grohman practices at Northern Light Mercy Hospital in Portland, Maine
Dr. Grohman's primary practice is Northern Light Mercy Hospital, at 175 Fore River Pkwy, Portland, ME 04102 in Cumberland County. The practice phone is (207) 879-3000.
- Northern Light Mercy Hospital175 Fore River Pkwy, Portland, ME 04102 · Cumberland CountyPhone(207) 879-3000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mark M. Grohman is affiliated with 3 sites of care and 7 medical groups
Dr. Grohman's primary practice is Northern Light Mercy Hospital in Portland, Maine. Dr. Grohman is also affiliated with Northern Light Mercy Hospital. The medical group on file is Northern Light Mercy Hospital. Dmand AI also links Dr. Grohman to 6 more medical groups and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mark M. Grohman's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Grohman practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northern Light Mercy Hospital | Available with a free account |
| +2 more sites and 6 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark M. Grohman is one of 180 hospitalists in Maine
Hospitalist is Dr. Grohman's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Grohman is licensed in Maine.
Specialties and state licenses
- Hospitalist, MainePrimary
Hospitalists near Dr. Grohman
Counts of hospitalists 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 M. Grohman billed Medicare for 123 services in 2024
CMS data shows 123 Medicare services from Dr. Grohman across 3 procedure codes in 2024, for 73 Medicare patients. Medicare paid $10,309 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Grohman's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1852024: 12334%
Dr. Grohman compared with the Maine median for hospitalists, 2024
- Dr. Grohman
- Maine median
- Medicare services
- 123vs 26353% below
- Medicare patients
- 73vs 12441% below
- Part D claims
- 30vs 5444% below
Medians across 182 hospitalists in Maine with Dmand AI profiles that report each measure.
Dr. Grohman'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark M. Grohman treated 73 Medicare patients in 2024, average age 77
CMS counts 73 Medicare patients who saw Dr. Grohman in 2024. The largest group is 75 to 84, with 24 patients. 75% of them have high blood pressure, and 73% have high cholesterol. 29% are also on Medicaid. Their average risk score is 2.32, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Grohman's median patient age at 71, with 51% women.
Dr. Grohman's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Grohman's Medicare patients by sex, 2024
- Women4055%
- Men3345%
Chronic conditions among Dr. Grohman's Medicare patients, 2024
- High blood pressure75%
- High cholesterol73%
- Arthritis59%
- Anxiety49%
- Mood disorders49%
- Heart failure48%
- Chronic kidney disease47%
- Atrial fibrillation44%
Share of Medicare patients with each condition. A patient can have several.
Dr. Grohman's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women51%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark M. Grohman wrote 38 Medicare Part D claims in 2024
In 2024, Dr. Grohman wrote 38 Medicare Part D claims for 22 patients. 92% of them were for generic drugs. CMS names the drug for 30 of them, across 2 drugs with 11 or more claims each, at $836 in total drug cost. In 2017, CMS named 34 claims across 2 drugs.
Dr. Grohman's Part D claims by kind of drug, 2024
- Generic35 claims92%
- Brand-name and other3 claims8%
Dr. Grohman's most prescribed drugs by claims, 2022
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. Grohman's Part D claims, 2024
- Antibiotics34%13 of 38 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, 2017 to 2022
- 2017
- 2022
- Claims for drugs CMS names
- 2017: 342022: 3012%
Drugs named by CMS: 2 in 2022, 2 in 2017.
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. Mark M. Grohman scored 82 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 82 out of 100 for Dr. Grohman for performance year 2024, reported as part of a group. Dr. Grohman accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Grohman's MIPS scores, performance year 2024
- 82of 100Final score
- 60.7of 100Quality
- 91of 100Promoting Interoperability
- 40of 100Improvement Activities
- 74of 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. Mark M. Grohman graduated from University of New England, College of Osteo Medicine
Dr. Grohman graduated from University of New England, College of Osteo Medicine in 2009.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark M. Grohman'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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)Clinician Public Reporting: Overall MIPS Performance (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. Mark M. Grohman
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 M. Grohman's NPI number?
Dr. Mark M. Grohman's NPI number is 1538393541. It was assigned on May 5, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark M. Grohman?
Dr. Mark M. Grohman is a hospitalist in Portland, Maine. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Mark M. Grohman practice?
Dr. Grohman practices at 175 Fore River Pkwy, Portland, ME 04102. Dr. Grohman's primary practice is Northern Light Mercy Hospital in Portland, Maine. Dmand AI also links Dr. Grohman to 6 medical groups and 1 group practice or clinic.
What is Dr. Mark M. Grohman's office phone number?
The practice phone on file for Dr. Grohman is (207) 879-3000.
What is Dr. Mark M. Grohman's medical license number?
Dr. Grohman holds Maine license DO2294.
Which hospitals is Dr. Mark M. Grohman affiliated with?
Dr. Grohman is affiliated with Northern Light Mercy Hospital.
What medical group is Dr. Mark M. Grohman part of?
Dr. Grohman is linked to Northern Light Mercy Hospital. Dmand AI links Dr. Grohman to 6 more medical groups.
Does Dr. Mark M. Grohman accept Medicare?
Yes. CMS data shows Dr. Grohman billed Medicare for 123 services in 2024, and Dr. Grohman accepts Medicare assignment.
What is Dr. Mark M. Grohman's MIPS score?
Dr. Grohman's MIPS final score for performance year 2024 is 82 out of 100, reported as part of a group.
How many Medicare patients does Dr. Mark M. Grohman see?
CMS counts 73 Medicare patients who saw Dr. Grohman in 2024, with an average age of 77.
Show 4 more questionsShow fewer questions
What services does Dr. Mark M. Grohman bill to Medicare?
In 2024, Dr. Grohman's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99232) and hospital inpatient care (99239).
Where did Dr. Mark M. Grohman go to medical school?
Dr. Grohman graduated from University of New England, College of Osteo Medicine in 2009.
What drugs does Dr. Mark M. Grohman prescribe most?
In 2022 Medicare Part D data, Dr. Grohman's most prescribed drugs by claims were Divalproex Sodium and Atorvastatin Calcium.
How long has Dr. Mark M. Grohman been practicing?
Dr. Grohman graduated from medical school in 2009, 17 years ago.
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