Dr. Mark L. Chalem, MD
- Medicare services, 2024
- 1,137
- Medicare patients, 2024
- 112
- Part D claims, 2024
- 4,576
- Industry payments
- $3,141
- Affiliated sites
- 1
- Practice address
- 2646 Patterson Rd, Grand Junction, CO 81506
- Practice phone
- Call (970) 697-1020
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
TMS Solutions Inc
Grand Junction, Colorado
Find Dr. Chalem'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 L. Chalem is a psychiatrist in Grand Junction, Colorado
Dr. Chalem practices at TMS Solutions Inc in Grand Junction, Colorado.
Dr. Chalem's NPI, 1083830848, was assigned on April 18, 2007. Dr. Chalem graduated from Warren Alpert Medical School of Brown University in 1976. Dr. Chalem holds Washington license MD00017775.
- NPI
- 1083830848NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6204984503
- NPI enumeration date
- April 18, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (970) 697-1020
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 76
- Medical school graduation
- 1976
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark L. Chalem practices at TMS Solutions Inc in Grand Junction, Colorado
Dr. Chalem's primary practice is TMS Solutions Inc, at 2646 Patterson Rd, Grand Junction, CO 81506 in Mesa County. The practice phone is (970) 697-1020.
- TMS Solutions Inc2646 Patterson Rd, Grand Junction, CO 81506 · Mesa CountyPhone(970) 697-1020
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mark L. Chalem is affiliated with 2 sites of care and 1 medical group
Dr. Chalem's primary practice is TMS Solutions Inc in Grand Junction, Colorado. The medical group on file is Junction Brain Health. Dmand AI also links Dr. Chalem to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Mark L. Chalem's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chalem practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| TMS Solutions Inc | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark L. Chalem is one of 611 psychiatrists in Colorado
Psychiatry is Dr. Chalem's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Chalem is licensed in Washington.
Specialties and state licenses
- Psychiatry, WashingtonPrimary
Psychiatrists near Dr. Chalem
Counts of psychiatrists 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 L. Chalem billed Medicare for 1,137 services in 2024
CMS data shows 1,137 Medicare services from Dr. Chalem across 7 procedure codes in 2024, for 112 Medicare patients. Medicare paid $78,604 for them. Every service was in an office.
Dr. Chalem's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 7612024: 64615%
- Tests and treatments
- 2023: 5942024: 49117%
Dr. Chalem compared with the Colorado median for psychiatrists, 2024
- Dr. Chalem
- Colorado median
- Medicare services
- 1,137vs 10910.4 times
- Medicare patients
- 112vs 382.9 times
- Part D claims
- 4,383vs 11039.8 times
Medians across 691 psychiatrists in Colorado with Dmand AI profiles that report each measure.
Dr. Chalem'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. Chalem and other psychiatrists in Colorado.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark L. Chalem treated 112 Medicare patients in 2024, average age 69
CMS counts 112 Medicare patients who saw Dr. Chalem in 2024. The largest group is 65 to 74, with 51 patients. 75% of them have mood disorders, and 72% have depression. 13% are also on Medicaid. Their average risk score is 1.44, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chalem's median patient age at 67, with 70% women.
Dr. Chalem's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Chalem's Medicare patients by sex, 2024
- Women7063%
- Men4238%
Chronic conditions among Dr. Chalem's Medicare patients, 2024
- Mood disorders75%
- Depression72%
- High cholesterol67%
- High blood pressure64%
- Arthritis57%
- Anxiety52%
- Bipolar disorder35%
- Chronic kidney disease29%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chalem's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women70%
- Men30%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark L. Chalem wrote 4,576 Medicare Part D claims in 2024
In 2024, Dr. Chalem wrote 4,576 Medicare Part D claims for 201 patients. 92% of them were for generic drugs. CMS names the drug for 4,383 of them, across 61 drugs with 11 or more claims each, at $872,297 in total drug cost. In 2023, CMS named 4,434 claims across 55 drugs.
Dr. Chalem's Part D claims by kind of drug, 2024
- Generic4,221 claims92%
- Brand-name355 claims8%
Dr. Chalem'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. Chalem's Part D claims, 2024
- Antipsychotics, patients 65 and over9%403 of 4,576 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: 4,4342024: 4,3831%
Drugs named by CMS: 61 in 2024, 55 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. Mark L. Chalem offers telehealth to Medicare patients
Dr. Chalem accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Chalem as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Mark L. Chalem received $3,141 in industry payments from 2016 to 2022
CMS Open Payments shows 219 general payments to Dr. Chalem from 20 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 96% of the total. Allergan Inc. paid the most, $950.
General payments to Dr. Chalem by program year, 2016 to 2022
General payments to Dr. Chalem by kind, 2016 to 2022
- Food and beverage$3,01396%
- Education$1284%
Companies that paid Dr. Chalem the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mark L. Chalem graduated from Warren Alpert Medical School of Brown University
Dr. Chalem graduated from Warren Alpert Medical School of Brown University in 1976.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark L. Chalem'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 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. Mark L. Chalem
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 L. Chalem's NPI number?
Dr. Mark L. Chalem's NPI number is 1083830848. It was assigned on April 18, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark L. Chalem?
Dr. Mark L. Chalem is a psychiatrist in Grand Junction, Colorado. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Mark L. Chalem practice?
Dr. Chalem practices at 2646 Patterson Rd, Grand Junction, CO 81506. Dr. Chalem's primary practice is TMS Solutions Inc in Grand Junction, Colorado. Dmand AI also links Dr. Chalem to 1 group practice or clinic.
What is Dr. Mark L. Chalem's office phone number?
The practice phone on file for Dr. Chalem is (970) 697-1020.
What is Dr. Mark L. Chalem's medical license number?
Dr. Chalem holds Washington license MD00017775.
What medical group is Dr. Mark L. Chalem part of?
Dr. Chalem is linked to Junction Brain Health.
Does Dr. Mark L. Chalem accept Medicare?
Yes. CMS data shows Dr. Chalem billed Medicare for 1,137 services in 2024, and Dr. Chalem accepts Medicare assignment.
Does Dr. Mark L. Chalem offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Chalem as offering telehealth services.
How many Medicare patients does Dr. Mark L. Chalem see?
CMS counts 112 Medicare patients who saw Dr. Chalem in 2024, with an average age of 69.
What services does Dr. Mark L. Chalem bill to Medicare?
In 2024, Dr. Chalem's most billed Medicare services were psychiatric service (90836), office visit, established patient (99213) and office visit, established patient (99212).
Show 4 more questionsShow fewer questions
Where did Dr. Mark L. Chalem go to medical school?
Dr. Chalem graduated from Warren Alpert Medical School of Brown University in 1976.
What drugs does Dr. Mark L. Chalem prescribe most?
In 2024 Medicare Part D data, Dr. Chalem's most prescribed drugs by claims were Bupropion XL, Trazodone HCl and Quetiapine Fumarate.
Has Dr. Mark L. Chalem received payments from drug or device companies?
CMS Open Payments shows $3,141 in general payments to Dr. Chalem from 20 companies from 2016 to 2022. The largest total came from Allergan Inc.
How long has Dr. Mark L. Chalem been practicing?
Dr. Chalem graduated from medical school in 1976, 50 years ago.
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