NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1548847163 MBBS
Verify on CMS → Evan Walding, MBBS
Internal Medicine Physician in Annapolis, Maryland.
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
434
Medicare Part D claims · 91 beneficiaries · Internal Medicine Physician avg: 3K
What the federal data shows
Evan Walding, MBBS filed 434 Medicare Part D claims in 2023 as an Internal Medicine Physician in Annapolis, Maryland.
- 434
- Part D claims, 2023
- 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.
Evan Walding, MBBS's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
434 Top 38% higher than 62% 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)
Evan Walding, MBBS 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 Evan Walding, MBBS?
Quality data not reportedPrimary specialty
Internal Medicine Physician
Medicare Part D claims
434 84% vs specialty avg
Specialty distribution in Maryland
How Internal Medicine Physician compares to other specialties among Maryland 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).
Evan Walding, MBBS appears in the CMS NPPES registry as an Internal Medicine Physician provider holding MBBS credentials at 810 BESTGATE RD STE 135, Annapolis, MD, 21401, with a listed phone of (410) 573-1110. NPI 1548847163 was issued on 03/28/2021.
Medicare Part D records for calendar year 2023 show 434 prescription claims written by this provider, covering 91 Medicare beneficiaries and totaling roughly $83K in drug spend.
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 | 1548847163 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | MBBS |
| Gender | Male |
| NPI Issued | 03/28/2021 |
Hospital and facility affiliations
Facilities where Evan Walding, MBBS 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.
Medstar Medical Group II LLC
Glen Burnie, MD
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
434
Total Claims
$83K
Total Drug Cost
91
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 833
- Total Day Supply
- 24,266
- Generic Drug Cost
- $10K
Patient Demographics
- Average Patient Age
- 68.1 years
- Avg HCC Risk Score
- 1.67
- Gender Split
- 65% female / 35% male
- Age Distribution
- <65: 24, 65-74: 42, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Evan Walding, MBBS prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
40 claims
- Levothyroxine Sodium
Levothyroxine Sodium
19 claims
- Lisinopril
Lisinopril
19 claims
- Amlodipine Besylate
Amlodipine Besylate
16 claims
- Quetiapine Fumarate 15
Quetiapine Fumarate
15 claims
- Metformin Hcl 14
Metformin Hcl
14 claims
- Breo Ellipta 11
Breo Ellipta
11 claims
- Clopidogrel 11
Clopidogrel
11 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 40 |
| Levothyroxine Sodium | 19 |
| Lisinopril | 19 |
| Amlodipine Besylate | 16 |
| Quetiapine Fumarate | 15 |
| Metformin Hcl | 14 |
| Breo Ellipta Fluticasone/Vilanterol | 11 |
| Clopidogrel Clopidogrel Bisulfate | 11 |
| Gabapentin | 11 |
| Pantoprazole Sodium | 11 |
* 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 Evan Walding, MBBS 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
Evan Walding, MBBS's 434 claims are below the specialty average of 2,716.
Nearby Internal Medicine Physician Providers in Maryland
Other clinicians with the same primary specialty enrolled in Maryland, drawn from the same CMS NPPES roster as Walding.
Dr. Joshua Aaron
MD
Elkton, MD
Dr. Alina Aasim
M.D.
Baltimore, MD
Dr. Eduardo Abarca Rojas
M.D.
Parkville, MD
Dr. Rasheed Abassi
M.D.
Clinton, MD
Dr. Shastine Abate
MD
Baltimore, MD
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 Maryland 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.
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Frequently Asked Questions
What is Evan Walding, MBBS's specialty? ▼
Evan Walding, MBBS specializes in Internal Medicine Physician and practices in Annapolis, Maryland. Credentials: MBBS.
How much does Evan Walding, MBBS prescribe under Medicare Part D? ▼
In 2023, Evan Walding, MBBS wrote 434 Medicare Part D claims totaling $83K in drug costs for 91 beneficiaries.
Where is Evan Walding, MBBS located? ▼
Evan Walding, MBBS is located at 810 BESTGATE RD STE 135, Annapolis, MD, 21401. Phone: (410) 573-1110.
What is Evan Walding, MBBS's NPI number? ▼
Evan Walding, MBBS's National Provider Identifier (NPI) is 1548847163, issued on 03/28/2021.
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 Evan Walding, MBBS prescribe most often? ▼
Based on 2023 Medicare Part D data, Evan Walding, MBBS's most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Evan Walding, MBBS accept Medicare? ▼
Evan Walding, MBBS appears in CMS Medicare data with 434 Part D claims and 91 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Evan Walding, MBBS's credentials? ▼
Evan Walding, MBBS's NPI is 1548847163 with credentials MBBS. 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.