NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1154458115 MD
Verify on CMS → Teresa Welsh, MD
Internal Medicine Physician in Aurora, Colorado.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 172,737 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
2K
Medicare Part D claims · 184 beneficiaries · Internal Medicine Physician avg: 3K
What the federal data shows
Teresa Welsh, MD filed 1,965 Medicare Part D claims in 2023 as an Internal Medicine Physician in Aurora, Colorado.
- 2K
- Part D claims, 2023
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.
Teresa Welsh, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,965 Top 16% higher than 84% of 1,370,886 prescribers
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)
Teresa Welsh, MD 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 Teresa Welsh, MD?
Quality data not reportedPrimary specialty
Internal Medicine Physician
Medicare Part D claims
1,965 28% vs specialty avg
Specialty distribution in Colorado
How Internal Medicine Physician compares to other specialties among Colorado 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:
How MIPS and board certification work
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).
Teresa Welsh, MD appears in the CMS NPPES registry as an Internal Medicine Physician provider holding MD credentials at 2550 S PARKER RD, Aurora, CO, 80014, with a listed phone of (303) 338-4545. NPI 1154458115 was issued on 02/27/2007.
Medicare Part D records for calendar year 2023 show 1,965 prescription claims written by this provider, covering 184 Medicare beneficiaries and totaling roughly $113K in drug spend, with an opioid prescribing rate of 2.0%.
Internal Medicine Physician is a high-volume specialty nationwide, with 172,737 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
Provider Details
| NPI | 1154458115 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 02/27/2007 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
1,965
Total Claims
$113K
Total Drug Cost
184
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 3,182
- Total Day Supply
- 92,280
- Generic Drug Cost
- $71K
- Opioid Claims
- 39 (2.0% rate)
- Antibiotic Claims
- 54
Patient Demographics
- Average Patient Age
- 83.0 years
- Avg HCC Risk Score
- 2.65
- Gender Split
- 68% female / 32% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Teresa Welsh, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Furosemide
Furosemide
126 claims
- Atorvastatin Calcium
Atorvastatin Calcium
97 claims
- Levothyroxine Sodium
Levothyroxine Sodium
92 claims
- Potassium Chloride
Potassium Chloride
87 claims
- Alendronate Sodium
Alendronate Sodium
82 claims
- Omeprazole
Omeprazole
79 claims
- Metoprolol Succinate
Metoprolol Succinate
62 claims
- Lisinopril 50
Lisinopril
50 claims
| Drug | Claims |
|---|---|
| Furosemide | 126 |
| Atorvastatin Calcium | 97 |
| Levothyroxine Sodium | 92 |
| Potassium Chloride | 87 |
| Alendronate Sodium | 82 |
| Omeprazole | 79 |
| Metoprolol Succinate | 62 |
| Lisinopril | 50 |
| Losartan Potassium | 44 |
| Trazodone Hcl | 43 |
* 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 Teresa Welsh, MD fits within the Internal Medicine Physician landscape nationally.
172,737
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider
Teresa Welsh, MD's 1,965 claims are below the specialty average of 2,716.
Nearby Internal Medicine Physician Providers in Colorado
Other clinicians with the same primary specialty enrolled in Colorado, drawn from the same CMS NPPES roster as Welsh.
Dr. Emily Aaron
MD
Denver, CO
Dr. Cynthia Abacan
MD
Pueblo, CO
Dr. David Abbey
MS MD
Fort Collins, CO
Dr. Ahmed Abdulrahman
MD
Pueblo, CO
Dr. Victor Abela
D.O.
Denver, CO
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 Colorado 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Colorado
Frequently Asked Questions
What is Teresa Welsh, MD's specialty? ▼
Teresa Welsh, MD specializes in Internal Medicine Physician and practices in Aurora, Colorado. Credentials: MD.
How much does Teresa Welsh, MD prescribe under Medicare Part D? ▼
In 2023, Teresa Welsh, MD wrote 1,965 Medicare Part D claims totaling $113K in drug costs for 184 beneficiaries.
Where is Teresa Welsh, MD located? ▼
Teresa Welsh, MD is located at 2550 S PARKER RD, Aurora, CO, 80014. Phone: (303) 338-4545.
What is Teresa Welsh, MD's NPI number? ▼
Teresa Welsh, MD's National Provider Identifier (NPI) is 1154458115, issued on 02/27/2007.
Does Teresa Welsh, MD prescribe opioids? ▼
Yes, Teresa Welsh, MD had 39 opioid claims in 2023 with an opioid prescribing rate of 2.0%.
How many Internal Medicine Physician providers are there in the US? ▼
There are 172,737 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 Teresa Welsh, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Teresa Welsh, MD's most frequently prescribed drugs include Furosemide, Atorvastatin Calcium, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Teresa Welsh, MD accept Medicare? ▼
Teresa Welsh, MD appears in CMS Medicare data with 1,965 Part D claims and 184 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Teresa Welsh, MD's credentials? ▼
Teresa Welsh, MD's NPI is 1154458115 with credentials MD. 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
View source datasets and methodology notes
- 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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.