MARJORIE ARMSTRONG, PMHNP
Psychiatric/Mental Health Nurse Practitioner · Colorado Springs, CO
Unclaimed listing — no published rate.
2553 listed. Telehealth requires a psychiatrist to be licensed in the state the patient is in, so everyone here can treat patients located in Colorado.
2,553 matching clinicians.
Psychiatric/Mental Health Nurse Practitioner · Colorado Springs, CO
Unclaimed listing — no published rate.
Psychiatric/Mental Health Nurse Practitioner · Denver, CO
Unclaimed listing — no published rate.
Psychiatric/Mental Health Nurse Practitioner · Grand Junction, CO
Unclaimed listing — no published rate.
Psychiatric/Mental Health Nurse Practitioner · Broomfield, CO
Unclaimed listing — no published rate.
Psychiatric/Mental Health Nurse Practitioner · Colorado Springs, CO
Unclaimed listing — no published rate.
Psychiatric/Mental Health Nurse Practitioner · Salida, CO
Unclaimed listing — no published rate.
Psychiatric/Mental Health Nurse Practitioner · Colorado Springs, CO
Unclaimed listing — no published rate.
Psychiatric/Mental Health Nurse Practitioner · Grand Junction, CO
Unclaimed listing — no published rate.
Psychiatric/Mental Health Nurse Practitioner · Aurora, CO
Unclaimed listing — no published rate.
Child & Adolescent Psychiatry Physician · Colorado Springs, CO
Unclaimed listing — no published rate.
Psychiatric/Mental Health Nurse Practitioner · Denver, CO
Unclaimed listing — no published rate.
Psychiatric/Mental Health Nurse Practitioner · Westminster, CO
Unclaimed listing — no published rate.
Psychiatric/Mental Health Nurse Practitioner · Colorado Springs, CO
Unclaimed listing — no published rate.
Psychiatry Physician · Colorado Springs, CO
Unclaimed listing — no published rate.
Psychiatric/Mental Health Nurse Practitioner · Denver, CO
Unclaimed listing — no published rate.
Psychiatric/Mental Health Nurse Practitioner · Fort Collins, CO
Unclaimed listing — no published rate.
Psychiatric/Mental Health Nurse Practitioner · Aurora, CO
Unclaimed listing — no published rate.
Colorado has 2,547 psychiatric prescribers in the federal provider registry: 1,058 psychiatrists with an MD, 142 with a DO, and 1,347 psychiatric nurse practitioners. Nurse practitioners make up 52.9% of prescribers in the state. That works out to 42.8 per 100,000 residents, of whom 20.1 are physicians.
Select one to see only those clinicians.
| Subspecialty | Clinicians | Share |
|---|---|---|
| Psychiatric/Mental Health Nurse Practitioner | 1,336 | 52.5% |
| Psychiatry Physician | 990 | 38.9% |
| Child & Adolescent Psychiatry Physician | 190 | 7.5% |
| Addiction Psychiatry Physician | 16 | 0.6% |
| Forensic Psychiatry Physician | 11 | 0.4% |
| Geriatric Psychiatry Physician | 5 | 0.2% |
| Psychosomatic Medicine Physician | 5 | 0.2% |
| City | Total | MD | DO | NP | Child |
|---|---|---|---|---|---|
| Denver | 590 | 324 | 30 | 234 | 47 |
| Aurora | 377 | 216 | 32 | 129 | 69 |
| Colorado Springs | 315 | 70 | 23 | 222 | 11 |
| Fort Collins | 124 | 37 | 6 | 80 | 3 |
| Boulder | 121 | 74 | 5 | 42 | 9 |
| Littleton | 92 | 26 | 3 | 63 | 6 |
| Pueblo | 88 | 32 | 2 | 54 | 1 |
| Grand Junction | 70 | 18 | 0 | 52 | 0 |
| Lakewood | 63 | 19 | 2 | 42 | 4 |
| Wheat Ridge | 47 | 14 | 2 | 31 | 4 |
| Greenwood Village | 37 | 10 | 0 | 27 | 1 |
| Parker | 37 | 4 | 1 | 32 | 1 |
| Westminster | 37 | 17 | 1 | 18 | 4 |
| Centennial | 35 | 14 | 1 | 20 | 6 |
| Englewood | 33 | 14 | 0 | 19 | 1 |
| Highlands Ranch | 29 | 17 | 3 | 9 | 4 |
| Durango | 27 | 9 | 2 | 16 | 1 |
| Loveland | 26 | 5 | 3 | 18 | 0 |
| Longmont | 23 | 13 | 0 | 10 | 4 |
| Greeley | 18 | 7 | 1 | 10 | 2 |
| Thornton | 18 | 7 | 1 | 10 | 2 |
| Castle Rock | 17 | 2 | 0 | 15 | 0 |
| Lone Tree | 17 | 7 | 5 | 5 | 0 |
| Fort Carson | 16 | 9 | 4 | 2 | 0 |
| Lafayette | 16 | 5 | 0 | 11 | 0 |
Clinicians grouped by shared practice address. The registry holds no employer field for individuals, so where a name appears it comes from an organisation registered at the same address — a reasonable inference, not a stated fact. A large building can house several practices, and a clinician may list an address they do not belong to.
| Practice | Clinicians | MD | DO | NP |
|---|---|---|---|---|
| Children'S Hospital Colorado · 13123 E 16th Ave, Aurora | 77 | 49 | 4 | 24 |
| Denver Health And Hospital Authority · 777 Bannock St, Denver | 65 | 44 | 5 | 14 |
| University Physicians Incorporated · 12605 E 16th Ave, Aurora | 57 | 46 | 6 | 5 |
| State Of Colorado · 1600 W 24th St, Pueblo | 31 | 12 | 0 | 19 |
| University Physicians Incorporated · 1890 N Revere Ct, Aurora | 30 | 22 | 1 | 7 |
| Aurora Comprehensive Community Mental Health Center · 791 Chambers Rd, Aurora | 29 | 17 | 7 | 5 |
| Kaiser Foundation Health Plan Of Co · 10350 E Dakota Ave, Denver | 27 | 24 | 2 | 1 |
| Jefferson Center For Mental Health · 4851 Independence St, Wheat Ridge | 24 | 8 | 0 | 16 |
| Cu Depression Center · 13001 E 17th Pl, Aurora | 24 | 23 | 1 | 0 |
| Mind Springs, Inc · 515 28 3/4 Rd, Grand Junction | 21 | 11 | 0 | 10 |
Counted from the date each clinician joined the federal registry.
How many of today's clinicians had registered by each year.
Both charts are built from registration dates, so they show when the current workforce joined. The registry records no departures, which means the running total can only rise and neither chart should be read as net growth — a clinician who registered in 2019 and has since retired is simply absent from both. Nurse practitioners were 81% of new registrations in 2021 and 98% in 2025.
| Year | New MD | New DO | New NP | New total | Registered to date |
|---|---|---|---|---|---|
| 2021 | 19 | 3 | 92 | 114 | 1,923 |
| 2022 | 17 | 6 | 125 | 148 | 2,071 |
| 2023 | 2 | 0 | 113 | 115 | 2,186 |
| 2024 | 1 | 1 | 129 | 131 | 2,317 |
| 2025 | 3 | 0 | 145 | 148 | 2,465 |
| 2026 | 2 | 0 | 80 | 82 | 2,547 |
650 of Colorado's psychiatric prescribers (25.5%) registered with the federal system in the last five years, and 132 in the last twelve months. 351 have been registered for more than twenty years. The nurse practitioner side is newer: 45.8% of psychiatric NPs registered in the last five years, against 2.4% of MD psychiatrists.
Of those who record a gender with the registry, 65% are women, split 84.8% among nurse practitioners and 44% among MD psychiatrists.
Source: CMS National Plan and Provider Enumeration System, refreshed weekly. Registration with the federal registry is not the same as actively practising, and does not indicate whether a clinician offers telehealth or is accepting new patients. Population figures are US Census Bureau estimates.
No clinician in Colorado has published a rate here yet. Every claimed profile on this site states both numbers as a condition of going live, so you can compare before you call rather than after.
Listings without a published rate come from the federal NPI registry and are unclaimed. We haven't verified them and they may be out of date.