Richard Mastenbrook, CNP
NPI 1619386083 · Nurse Practitioner · Chisago City, MN
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Richard Mastenbrook, CNP is a Nurse Practitioner provider in Chisago City, MN (NPI 1619386083).
Provider details
- NPI number
- 1619386083
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CNP
- Sex
- Male
- Sole proprietor
- Yes
- License
- AG0714121 (MN)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
11 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,523 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 737 | $87 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 357 | $87 |
| Residence Visit for Established Patient With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99349 | 275 | $103 |
| Nursing Facility Discharge Management, More Than 30 Minutes99316 | 91 | $106 |
| Advance Care Planning, First 30 Minutes99497 | 63 | $61 |
Typical Medicare-allowed amounts for these services range $61–$106 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 98 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Furosemide | 277 | 45 |
| Gabapentin | 241 | 30 |
| Levothyroxine Sodium | 217 | 28 |
| Apixabanbrand: Eliquis | 208 | 30 |
| Sertraline Hcl | 189 | 22 |
| Atorvastatin Calcium | 162 | 29 |
| Mirtazapine |
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-08-10
- Last updated
- 2022-08-11
- Certified
- 2022-08-11
Frequently asked questions
- What is Richard Mastenbrook's NPI number?
- Richard Mastenbrook's National Provider Identifier (NPI) is 1619386083, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Richard Mastenbrook's specialty?
- Richard Mastenbrook is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Richard Mastenbrook located?
- Richard Mastenbrook's practice location on file with NPPES is 11725 Stinson Ave, Chisago City, MN 55013-9542.
- What is Richard Mastenbrook's phone number?
- The practice phone number listed in the NPPES registry for Richard Mastenbrook is (651) 257-8850.
- Does Richard Mastenbrook accept Medicare?
- Richard Mastenbrook is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Richard Mastenbrook's NPI active?
- Yes — Richard Mastenbrook's NPI (1619386083) is active in the NPPES registry as of the last update on 2022-08-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.