NPI registry status
Active
2026 NPPES data Hypertension Specialist Physician NPI 1043253867 M.D.
Verify on CMS → Wallace Johnson, M.D.
Hypertension Specialist Physician in Baltimore, 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 40 in Hypertension Specialist 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
3K
Medicare Part D claims · 360 beneficiaries · Hypertension Specialist Physician avg: 3K
Industry payments
$761.31
3 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Wallace Johnson, M.D. filed 3,340 Medicare Part D claims in 2024 as a Hypertension Specialist Physician in Baltimore, Maryland.
- 3K
- Part D claims, 2024
- Likely
- board-certified (heuristic)
- ≥89th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Wallace Johnson, M.D.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1043253867), first enumerated 06/13/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 3,340 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$761.31 in reported industry payments (3 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1043253867 · Hypertension Specialist Physician
NPI-10 · ENUM-LEGACY · TAX-TRACE · RX-MID · BOOK-THIN · PHOTO-ENUM
- NPI-10 1043253867
- ENUM-LEGACY 2006
- TAX-TRACE 40
- RX-MID 3,340
- BOOK-THIN 1 in Maryland
- PHOTO-ENUM Vincent Figueredo, M… · 2006
Wallace Johnson, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
3,340 ≥ 89th percentile 89% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
✓
Board certification likely (heuristic, not verified)
Wallace Johnson, M.D. 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 Wallace Johnson, M.D.?
Quality data not reportedPrimary specialty
Hypertension Specialist Physician
Medicare Part D claims
3,340 30% vs specialty avg
Specialty distribution in Maryland
How Hypertension Specialist 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 Hypertension Specialist 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).
Practice Address
Provider Details
| NPI | 1043253867 |
|---|---|
| Specialty | Hypertension Specialist Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 06/13/2006 |
Hospital and facility affiliations
Facilities where Wallace Johnson, M.D. 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.
University OF Maryland Physicians PA
Baltimore, 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).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Wallace Johnson, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$761
Largest payer
Novartis Pharmaceuticals Corporation
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
3,340
Total Claims
$259K
Total Drug Cost
360
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 8,142.9
- Total Day Supply
- 237,399
- Generic Drug Cost
- $89K
- Opioid Claims
- 11 (0.3% rate)
- Antibiotic Claims
- 19
Patient Demographics
- Average Patient Age
- 74.0 years
- Avg HCC Risk Score
- 1.68
- Gender Split
- 59% female / 41% male
- Age Distribution
- <65: 31, 65-74: 155, 75-84: 134, 85+: 40
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Wallace Johnson, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Amlodipine Besylate
Amlodipine Besylate
329 claims
- Atorvastatin Calcium
Atorvastatin Calcium
323 claims
- Losartan Potassium
Losartan Potassium
237 claims
- Hydrochlorothiazide
Hydrochlorothiazide
162 claims
- Nifedipine Er
Nifedipine Er
151 claims
- Metoprolol Succinate 97
Metoprolol Succinate
97 claims
- Lisinopril 94
Lisinopril
94 claims
- Carvedilol 87
Carvedilol
87 claims
| Drug | Claims |
|---|---|
| Amlodipine Besylate | 329 |
| Atorvastatin Calcium | 323 |
| Losartan Potassium | 237 |
| Hydrochlorothiazide | 162 |
| Nifedipine Er Nifedipine | 151 |
| Metoprolol Succinate | 97 |
| Lisinopril | 94 |
| Carvedilol | 87 |
| Ezetimibe | 82 |
| Spironolactone | 76 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Hypertension Specialist Physician Overview
How Wallace Johnson, M.D. fits within the Hypertension Specialist Physician landscape nationally.
40
Hypertension Specialist Physician Providers in US
21
States with Hypertension Specialist Physician
2,568
Avg Claims per Provider
Wallace Johnson, M.D.'s 3,340 claims are above the specialty average of 2,568.
Nationwide Hypertension Specialist Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Johnson, both outside Maryland so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Frequently Asked Questions
What is Wallace Johnson, M.D.'s specialty? ▼
Wallace Johnson, M.D. specializes in Hypertension Specialist Physician and practices in Baltimore, Maryland. Credentials: M.D..
How much does Wallace Johnson, M.D. prescribe under Medicare Part D? ▼
In 2024, Wallace Johnson, M.D. wrote 3,340 Medicare Part D claims totaling $259K in drug costs for 360 beneficiaries.
Where is Wallace Johnson, M.D. located? ▼
Wallace Johnson, M.D. is located at 22 S GREENE ST, Baltimore, MD, 21201. Phone: (410) 328-7877.
What is Wallace Johnson, M.D.'s NPI number? ▼
Wallace Johnson, M.D.'s National Provider Identifier (NPI) is 1043253867, issued on 06/13/2006.
Does Wallace Johnson, M.D. prescribe opioids? ▼
Yes, Wallace Johnson, M.D. had 11 opioid claims in 2024 with an opioid prescribing rate of 0.3%.
How many Hypertension Specialist Physician providers are there in the US? ▼
There are 40 Hypertension Specialist Physician providers across 21 states in the US. The average Hypertension Specialist Physician provider writes 2,568 Medicare Part D claims per year.
What drugs does Wallace Johnson, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Wallace Johnson, M.D.'s most frequently prescribed drugs include Amlodipine Besylate, Atorvastatin Calcium, Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Wallace Johnson, M.D. accept Medicare? ▼
Wallace Johnson, M.D. appears in CMS Medicare data with 3,340 Part D claims and 360 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Wallace Johnson, M.D.'s credentials? ▼
Wallace Johnson, M.D.'s NPI is 1043253867 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
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 (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.