2026 NPPES data Internal Medicine Physician NPI 1891991121 M.D.
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Heather Brislen, M.D.

Internal Medicine Physician in Albuquerque, New Mexico. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 172,858 in Internal Medicine Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.

Federal data, no proprietary rating. We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
700
Medicare Part D claims · 67 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
87%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Heather Brislen, M.D. filed 700 Medicare Part D claims in 2023 as a Internal Medicine Physician in Albuquerque, New Mexico, prescribing 87% generic.

700
Part D claims, 2023
87%
generic prescribing

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.

Heather Brislen, M.D.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023, across all CMS prescribers nationally

700 Top 29% higher than 71% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). This entry sits in this band. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2K+: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board-eligible specialty (heuristic, not verified)

Heather Brislen, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about Heather Brislen, M.D.?

Quality data not reported

NPI registry status

Active

Issued 06/24/2007

NPI 1891991121

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

700 74% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in New Mexico

How Internal Medicine Physician compares to other specialties among New Mexico providers

New Mexico providers

Largest specialties in New Mexico (% of in-state providers)

Behavior Technician - 9.5%Behavior Technician9.5%Case Manager/Care Coordinator - 6.3%Case Manager/Care Coordinator6.3%Mental Health Counselor - 5.1%Mental Health Counselor5.1%Student in an Organized Health Care Education/Training Program - 3.9%Student in an Organized Health Care Education/Training Program3.9%Counselor - 3.8%Counselor3.8%Clinical Social Worker - 3.8%Clinical Social Worker3.8%Internal Medicine Physician - 1.5%Internal Medicine Physician1.5%
Largest specialties in New Mexico (% of in-state providers)

Board certification

Not published by CMS

CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Internal Medicine Physician. Verify directly:

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

Heather Brislen, M.D. appears in the CMS NPPES registry as a Internal Medicine Physician provider holding M.D. credentials at 4600 JEFFERSON LN NE STE D, Albuquerque, NM, 87109, with a listed phone of (505) 433-7745. NPI 1891991121 was issued on 06/24/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Brislen most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 700 prescription claims written by this provider, covering 67 Medicare beneficiaries and totaling roughly $91K in drug spend, split 11% brand-name and 87% generic by claim count. These figures capture only Medicare Part D, commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

4600 JEFFERSON LN NE STE D
Albuquerque, NM 87109

Provider Details

NPI 1891991121
Specialty Internal Medicine Physician
Credentials M.D.
Gender Female
NPI Issued 06/24/2007

Brand vs generic prescribing mix · Typical

Heather Brislen, M.D. - brand share 11.0%
Internal Medicine Physician average

11% brand-name claims vs 87% generic, on 700 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

700
Total Claims
$91K
Total Drug Cost
67
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,791
Total Day Supply
52,219
Brand vs Generic
11% brand / 87% generic
Brand Drug Cost
$72K
Generic Drug Cost
$19K
Antibiotic Claims
26

Patient Demographics

Average Patient Age
76.8 years
Avg HCC Risk Score
0.89
Gender Split
66% female / 34% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What Heather Brislen, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Atorvastatin Calcium
37
Levothyroxine Sodium
31
Gabapentin
24
Hydrochlorothiazide
23
Trazodone Hcl
19
Buspirone Hcl
18
Lisinopril
17
Rosuvastatin Calcium
16
Metoprolol Succinate
15
Montelukast Sodium
15

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Internal Medicine Physician Overview

How Heather Brislen, M.D. fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

Heather Brislen, M.D.'s 700 claims are below the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in New Mexico

Other clinicians with the same primary specialty enrolled in New Mexico, drawn from the same CMS NPPES roster as Brislen.

Compare Internal Medicine Physician nationally: see state-by-state distribution →

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the New Mexico medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Internal Medicine Physician peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Heather Brislen, M.D.'s specialty?
Heather Brislen, M.D. specializes in Internal Medicine Physician and practices in Albuquerque, New Mexico. Credentials: M.D..
How much does Heather Brislen, M.D. prescribe under Medicare Part D?
In 2023, Heather Brislen, M.D. wrote 700 Medicare Part D claims totaling $91K in drug costs for 67 beneficiaries.
Where is Heather Brislen, M.D. located?
Heather Brislen, M.D. is located at 4600 JEFFERSON LN NE STE D, Albuquerque, NM, 87109. Phone: (505) 433-7745.
What is Heather Brislen, M.D.'s NPI number?
Heather Brislen, M.D.'s National Provider Identifier (NPI) is 1891991121, issued on 06/24/2007.
Does Heather Brislen, M.D. prescribe more brand-name or generic drugs?
Heather Brislen, M.D.'s prescribing is 11% brand-name and 87% generic drugs by claim count, with $72K in brand drug costs.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does Heather Brislen, M.D. prescribe most often?
Based on 2023 Medicare Part D data, Heather Brislen, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Heather Brislen, M.D. accept Medicare?
Heather Brislen, M.D. appears in CMS Medicare data with 700 Part D claims and 67 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Heather Brislen, M.D.'s credentials?
Heather Brislen, M.D.'s NPI is 1891991121 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology

Compiled from official public sources by the PlainDoctor editorial team.