NPI registry status
Active
2026 NPPES data Allergy & Immunology Physician NPI 1073590071 M.D.
Verify on CMS → Stephen Shield, M.D.
Allergy & Immunology Physician in Williamsburg, Virginia.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 3,394 in Allergy & Immunology 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
846
Medicare Part D claims · 167 beneficiaries · Allergy & Immunology Physician avg: 764
Generic prescribing
0%
generic claims · 54% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
63.2/100
▼ 20 pts below national avg 83.5 · Mid-tier
Industry payments
$17.4K
129 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Stephen Shield, M.D. reported a CMS MIPS final score of 63.2/100 - below the 83.5 national average - and filed 846 Medicare Part D claims in 2023.
- 63.2/100
- MIPS score · -20 vs avg
- 846
- Part D claims, 2023
- 0%
- 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.
Stephen Shield, M.D.'s MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
63 ≥ 6th percentile 6% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured providers. 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 whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Stephen Shield, M.D. sits
This provider among allergy & immunology physician peers
Across the 659 allergy & immunology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Stephen Shield, M.D. writes more Part D claims than 58% of them and scores higher on MIPS quality than 17% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one allergy & immunology physician peer from a representative sample of 60; the gold marker is Stephen Shield, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Stephen Shield, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 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 Stephen Shield, M.D.?
Below national averagePrimary specialty
Allergy & Immunology Physician
Medicare Part D claims
846 11% vs specialty avg
MIPS final score
63.2/100 20.3 pts vs avg
Specialty distribution in Virginia
How Allergy & Immunology Physician compares to other specialties among Virginia providers
Medicare quality performance, MIPS
Stephen Shield, M.D.'s 2023 MIPS final score plotted against the Allergy & Immunology Physician national average
- MIPS Final Score
- 63.2/100
- vs 83.5 national avg · 2023 performance year
MIPS final score (Allergy & Immunology Physician) - 63.2/100 vs national avg 83.5
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).
Stephen Shield, M.D. appears in the CMS NPPES registry as an Allergy & Immunology Physician provider holding M.D. credentials at 1144 PROFESSIONAL DR, Williamsburg, VA, 23185, with a listed phone of (757) 259-0443. NPI 1073590071 was issued on 12/30/2005.
Medicare Part D records for calendar year 2023 show 846 prescription claims written by this provider, covering 167 Medicare beneficiaries and totaling roughly $537K in drug spend, split 54% brand-name and 0% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 63.2/100 for the 2023 performance year (Quality 63.5, Cost 44.2), compared with the 83.5 average among clinicians with a measured score.
Allergy & Immunology Physician is a narrow specialty nationwide, with 3,394 enrolled providers across 52 states and an average of 764 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 | 1073590071 |
|---|---|
| Specialty | Allergy & Immunology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 12/30/2005 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
63.1761
Final Score
Measured-score avg: 83.5
63.4993
Quality
44.1714
Cost
Reporting: Individual
Hospital and facility affiliations
Facilities where Stephen Shield, 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.
Allergy Partners PLLC
Williamsburg, VA
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 Stephen Shield, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$17.4K
Largest payer
AstraZeneca Pharmaceuticals LP
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.
Brand vs generic prescribing mix · Brand-heavy
Stephen Shield, M.D. - brand share 54.0%
Allergy & Immunology Physician average
54% brand-name claims vs 0% generic, on 846 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.
846
Total Claims
$537K
Total Drug Cost
167
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,362
- Total Day Supply
- 38,898
- Brand vs Generic
- 54% brand / 0% generic
- Brand Drug Cost
- $517K
- Antibiotic Claims
- 38
Patient Demographics
- Average Patient Age
- 71.5 years
- Avg HCC Risk Score
- 1.07
- Gender Split
- 74% female / 26% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Stephen Shield, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Azelastine Hcl
Azelastine Hcl
104 claims
- Montelukast Sodium
Montelukast Sodium
82 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
55 claims
- Symbicort
Symbicort
47 claims
- Spiriva Respimat
Spiriva Respimat
44 claims
- Breo Ellipta 35
Breo Ellipta
35 claims
- Trelegy Ellipta 28
Trelegy Ellipta
28 claims
- Arnuity Ellipta 24
Arnuity Ellipta
24 claims
| Drug | Claims |
|---|---|
| Azelastine Hcl | 104 |
| Montelukast Sodium | 82 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 55 |
| Symbicort Budesonide/Formoterol Fumarate | 47 |
| Spiriva Respimat Tiotropium Bromide | 44 |
| Breo Ellipta Fluticasone/Vilanterol | 35 |
| Trelegy Ellipta Fluticasone/Umeclidin/Vilanter | 28 |
| Arnuity Ellipta Fluticasone Furoate | 24 |
| Dupixent Syringe Dupilumab | 24 |
| Gamunex-C Immune Globul G/Gly/Iga Avg 46 | 24 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Allergy & Immunology Physician Overview
How Stephen Shield, M.D. fits within the Allergy & Immunology Physician landscape nationally.
3,394
Allergy & Immunology Physician Providers in US
52
States with Allergy & Immunology Physician
764
Avg Claims per Provider
Stephen Shield, M.D.'s 846 claims are above the specialty average of 764.
Nearby Allergy & Immunology Physician Providers in Virginia
Other clinicians with the same primary specialty enrolled in Virginia, drawn from the same CMS NPPES roster as Shield.
Dr. Parasmani Acharya
M.D.
Pulaski, VA
Veronica Alix
Hampton, VA
Dr. Darshana Alle
M.D.
Henrico, VA
Dr. Oral Alpan
MD
Springfield, VA
Dr. Donald Asbury
MD
Bluefield, VA
Compare Allergy & Immunology 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 Virginia medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Allergy & Immunology 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 Stephen Shield, M.D.'s specialty? ▼
Stephen Shield, M.D. specializes in Allergy & Immunology Physician and practices in Williamsburg, Virginia. Credentials: M.D..
How much does Stephen Shield, M.D. prescribe under Medicare Part D? ▼
In 2023, Stephen Shield, M.D. wrote 846 Medicare Part D claims totaling $537K in drug costs for 167 beneficiaries.
What is Stephen Shield, M.D.'s Medicare quality score? ▼
Stephen Shield, M.D. has a CMS MIPS Final Score of 63.2/100 (Quality: 63.5, Cost: 44.2). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Stephen Shield, M.D. located? ▼
Stephen Shield, M.D. is located at 1144 PROFESSIONAL DR, Williamsburg, VA, 23185. Phone: (757) 259-0443.
What is Stephen Shield, M.D.'s NPI number? ▼
Stephen Shield, M.D.'s National Provider Identifier (NPI) is 1073590071, issued on 12/30/2005.
Does Stephen Shield, M.D. prescribe more brand-name or generic drugs? ▼
Stephen Shield, M.D.'s prescribing is 54% brand-name and 0% generic drugs by claim count, with $517K in brand drug costs.
How many Allergy & Immunology Physician providers are there in the US? ▼
There are 3,394 Allergy & Immunology Physician providers across 52 states in the US. The average Allergy & Immunology Physician provider writes 764 Medicare Part D claims per year.
What drugs does Stephen Shield, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Stephen Shield, M.D.'s most frequently prescribed drugs include Azelastine Hcl, Montelukast Sodium, Albuterol Sulfate Hfa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Stephen Shield, M.D. accept Medicare? ▼
Stephen Shield, M.D. appears in CMS Medicare data with 846 Part D claims and 167 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Stephen Shield, M.D.'s credentials? ▼
Stephen Shield, M.D.'s NPI is 1073590071 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 (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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.