NPI registry status
Active
2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1043403447 MD
Verify on CMS → Erika Alford, MD
Endocrinology, Diabetes & Metabolism Physician in Tamuning, Guam.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 7,852 in Endocrinology, Diabetes & Metabolism 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 · 83 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
64%
generic claims · 28% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Erika Alford, MD filed 2,132 Medicare Part D claims in 2023 as a Endocrinology, Diabetes & Metabolism Physician in Tamuning, Guam, prescribing 64% generic.
- 2K
- Part D claims, 2023
- 64%
- generic prescribing
- Likely
- board-certified (heuristic)
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.
Erika Alford, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
2,132 Top 15% higher than 85% 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 certification likely (heuristic, not verified)
Erika Alford, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Erika Alford, MD?
Quality data not reportedPrimary specialty
Endocrinology, Diabetes & Metabolism Physician
Medicare Part D claims
2,132 19% vs specialty avg
Specialty distribution in Guam
How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among Guam 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 Endocrinology, Diabetes & Metabolism 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).
Erika Alford, MD appears in the CMS NPPES registry as a Endocrinology, Diabetes & Metabolism Physician provider holding MD credentials at 1244 N MARINE CORPS DR, Tamuning, GU, 96913, with a listed phone of (671) 647-8262. NPI 1043403447 was issued on 08/20/2007.
Medicare Part D records for calendar year 2023 show 2,132 prescription claims written by this provider, covering 83 Medicare beneficiaries and totaling roughly $405K in drug spend, split 28% brand-name and 64% generic by claim count.
Endocrinology, Diabetes & Metabolism Physician is a mid-sized specialty nationwide, with 7,852 enrolled providers across 54 states and an average of 2,639 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 | 1043403447 |
|---|---|
| Specialty | Endocrinology, Diabetes & Metabolism Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 08/20/2007 |
Hospital and facility affiliations
Facilities where Erika Alford, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
American Medical Center, LLC
Tamuning, GU
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Above average
Erika Alford, MD - brand share 28.0%
Endocrinology, Diabetes & Metabolism Physician average
28% brand-name claims vs 64% generic, on 2,132 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.
2,132
Total Claims
$405K
Total Drug Cost
83
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,584
- Total Day Supply
- 76,583
- Brand vs Generic
- 28% brand / 64% generic
- Brand Drug Cost
- $370K
- Generic Drug Cost
- $27K
Patient Demographics
- Average Patient Age
- 73.4 years
- Avg HCC Risk Score
- 1.69
- Gender Split
- 73% female / 27% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Erika Alford, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Rosuvastatin Calcium
Rosuvastatin Calcium
201 claims
- Levothyroxine Sodium
Levothyroxine Sodium
132 claims
- Losartan Potassium
Losartan Potassium
127 claims
- Amlodipine Besylate
Amlodipine Besylate
117 claims
- Trulicity
Trulicity
117 claims
- Jardiance
Jardiance
106 claims
- Atorvastatin Calcium
Atorvastatin Calcium
87 claims
- Glipizide 80
Glipizide
80 claims
| Drug | Claims |
|---|---|
| Rosuvastatin Calcium | 201 |
| Levothyroxine Sodium | 132 |
| Losartan Potassium | 127 |
| Amlodipine Besylate | 117 |
| Trulicity Dulaglutide | 117 |
| Jardiance Empagliflozin | 106 |
| Atorvastatin Calcium | 87 |
| Glipizide | 80 |
| Carvedilol | 77 |
| Metformin Hcl Er Metformin Hcl | 72 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Endocrinology, Diabetes & Metabolism Physician in GU →
All providers in Guam →
Compare specialties →
Endocrinology, Diabetes & Metabolism Physician Overview
How Erika Alford, MD fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.
7,852
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,639
Avg Claims per Provider
Erika Alford, MD's 2,132 claims are below the specialty average of 2,639.
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 Guam medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Endocrinology, Diabetes & Metabolism 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
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Medical Specialties Explained
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Understanding Medicare Claims Data
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How insurance networks affect your costs
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Explore Guam
Frequently Asked Questions
What is Erika Alford, MD's specialty? ▼
Erika Alford, MD specializes in Endocrinology, Diabetes & Metabolism Physician and practices in Tamuning, Guam. Credentials: MD.
How much does Erika Alford, MD prescribe under Medicare Part D? ▼
In 2023, Erika Alford, MD wrote 2,132 Medicare Part D claims totaling $405K in drug costs for 83 beneficiaries.
Where is Erika Alford, MD located? ▼
Erika Alford, MD is located at 1244 N MARINE CORPS DR, Tamuning, GU, 96913. Phone: (671) 647-8262.
What is Erika Alford, MD's NPI number? ▼
Erika Alford, MD's National Provider Identifier (NPI) is 1043403447, issued on 08/20/2007.
Does Erika Alford, MD prescribe more brand-name or generic drugs? ▼
Erika Alford, MD's prescribing is 28% brand-name and 64% generic drugs by claim count, with $370K in brand drug costs.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US? ▼
There are 7,852 Endocrinology, Diabetes & Metabolism Physician providers across 54 states in the US. The average Endocrinology, Diabetes & Metabolism Physician provider writes 2,639 Medicare Part D claims per year.
What drugs does Erika Alford, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Erika Alford, MD's most frequently prescribed drugs include Rosuvastatin Calcium, Levothyroxine Sodium, Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Erika Alford, MD accept Medicare? ▼
Erika Alford, MD appears in CMS Medicare data with 2,132 Part D claims and 83 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Erika Alford, MD's credentials? ▼
Erika Alford, MD's NPI is 1043403447 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
Compiled from official public sources by the PlainDoctor editorial team.