Dr. Mariela Herrera Rojas, MD
- Medicare services, 2019
- 51
- Hospital affiliations
- 1
- Industry payments
- $98
- Medical group
- 1
- State licenses
- 2
- Practice address
- 2800 10th Ave N, Billings, MT 59101
- Practice phone
- Call (406) 657-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Herrera Rojas' 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. Mariela Herrera Rojas is a psychiatrist in Billings, Montana
Dr. Herrera Rojas practices at Billings Clinic Hospital in Billings, Montana, part of Billings Clinic.
Dr. Herrera Rojas' NPI, 1922318096, was assigned on October 7, 2010. Dr. Herrera Rojas holds Ohio license 57.017664.
- NPI
- 1922318096NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0648583419
- NPI enumeration date
- October 7, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (406) 657-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mariela Herrera Rojas practices at Billings Clinic Hospital in Billings, Montana
Dr. Herrera Rojas' primary practice is Billings Clinic Hospital, at 2800 10th Ave N, Billings, MT 59101 in Yellowstone County. The practice phone is (406) 657-4000.
- Billings Clinic Hospital2800 10th Ave N, Billings, MT 59101 · Yellowstone CountyPhone(406) 657-4000
Source: Dmand AI Affiliation Data
Dr. Mariela Herrera Rojas is affiliated with 2 sites of care and 1 medical group
Dr. Herrera Rojas' primary practice is Billings Clinic Hospital in Billings, Montana, part of Billings Clinic. The medical group on file is Billings Clinic. Dmand AI also links Dr. Herrera Rojas to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mariela Herrera Rojas' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Herrera Rojas practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Billings Clinic Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Billings Clinic and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Mariela Herrera Rojas is one of 108 psychiatrists in Montana
Psychiatry is Dr. Herrera Rojas' primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dmand AI has Dr. Herrera Rojas' licenses on file in 2 states: Ohio and Montana.
Specialties and state licenses
- Psychiatry, OhioPrimary
- Clinical child and adolescent psychologist, Montana
Psychiatrists near Dr. Herrera Rojas
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. Mariela Herrera Rojas billed Medicare for 51 services in 2019
CMS data shows 51 Medicare services from Dr. Herrera Rojas across 1 procedure code in 2019. Medicare paid $4,249 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Herrera Rojas' Medicare services by type, 2018 to 2019
- 2018
- 2019
- Office and hospital visits
- 2018: 162019: 51219%
Dr. Herrera Rojas compared with the Montana median for psychiatrists, 2019
- Dr. Herrera Rojas
- Montana median
- Medicare services
- 51vs 17671% below
Medians across 124 psychiatrists in Montana with Dmand AI profiles that report each measure.
Dr. Herrera Rojas' most billed Medicare procedure codes, 2019
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. Herrera Rojas?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Herrera Rojas and other psychiatrists in Montana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mariela Herrera Rojas' patients have a median age of 16
Across all payers, Dmand AI patient panel data puts Dr. Herrera Rojas' median patient age at 16, with 78% women.
Dr. Herrera Rojas' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 16
Patient panel by sex, all payers
- Women78%
- Men22%
Source: Dmand AI Patient Panel Data
How Dr. Mariela Herrera Rojas takes part in Medicare
Dr. Herrera Rojas 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. Mariela Herrera Rojas received $98 in industry payments in 2021
CMS Open Payments shows 1 general payment to Dr. Herrera Rojas from 1 drug or device company in 2021. Food and beverage make up the largest share, 100% of the total. Integra LifeSciences Corporation paid the most, $98.
Companies that paid Dr. Herrera Rojas the most, 2021 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Mariela Herrera Rojas'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 |
| 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) |
| 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. Mariela Herrera Rojas
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. Mariela Herrera Rojas' NPI number?
Dr. Mariela Herrera Rojas' NPI number is 1922318096. It was assigned on October 7, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Mariela Herrera Rojas?
Dr. Mariela Herrera Rojas is a psychiatrist in Billings, Montana. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Mariela Herrera Rojas practice?
Dr. Herrera Rojas practices at 2800 10th Ave N, Billings, MT 59101. Dr. Herrera Rojas' primary practice is Billings Clinic Hospital in Billings, Montana, part of Billings Clinic. Dmand AI also links Dr. Herrera Rojas to 1 group practice or clinic.
What is Dr. Mariela Herrera Rojas' office phone number?
The practice phone on file for Dr. Herrera Rojas is (406) 657-4000.
What is Dr. Mariela Herrera Rojas' medical license number?
Dr. Herrera Rojas holds Ohio license 57.017664, one of the licenses on file in 2 states.
Which states has Dr. Mariela Herrera Rojas been licensed in?
Dmand AI has state licenses on file for Dr. Herrera Rojas in Ohio and Montana.
Which hospitals is Dr. Mariela Herrera Rojas affiliated with?
Dr. Herrera Rojas practices at Billings Clinic Hospital in Billings, Montana.
What medical group is Dr. Mariela Herrera Rojas part of?
Dr. Herrera Rojas is linked to Billings Clinic.
Does Dr. Mariela Herrera Rojas accept Medicare?
Yes. CMS data shows Dr. Herrera Rojas billed Medicare for 51 services in 2019, and Dr. Herrera Rojas accepts Medicare assignment.
What services does Dr. Mariela Herrera Rojas bill to Medicare?
In 2019, Dr. Herrera Rojas' most billed Medicare services were hospital inpatient care (99233).
Has Dr. Mariela Herrera Rojas received payments from drug or device companies?
CMS Open Payments shows $98 in general payments to Dr. Herrera Rojas from 1 company from 2021 to 2021. The largest total came from Integra LifeSciences Corporation.
How long has Dr. Mariela Herrera Rojas been practicing?
Dr. Herrera Rojas graduated from medical school in 2002, 24 years ago.
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