NPI registry status
Active
2026 NPPES data Allergy & Immunology Physician NPI 1720308448 M.D.
Verify on CMS → Sonia Cajigal, M.D.
Allergy & Immunology Physician in Saint Peters, Missouri.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 3,390 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
246
Medicare Part D claims · 60 beneficiaries · Allergy & Immunology Physician avg: 764
Industry payments
$1.6K
84 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Sonia Cajigal, M.D. filed 246 Medicare Part D claims in 2023 as a Allergy & Immunology Physician in Saint Peters, Missouri.
- 246
- Part D claims, 2023
- $1.6K
- industry payments (Sunshine Act)
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.
Sonia Cajigal, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
246 49th percentile higher than 49% 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)
Sonia Cajigal, M.D. 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 Sonia Cajigal, M.D.?
Quality data not reportedPrimary specialty
Allergy & Immunology Physician
Medicare Part D claims
246 68% vs specialty avg
Specialty distribution in Missouri
How Allergy & Immunology Physician compares to other specialties among Missouri 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 Allergy & Immunology 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).
Sonia Cajigal, M.D. appears in the CMS NPPES registry as a Allergy & Immunology Physician provider holding M.D. credentials at 4800 MEXICO RD STE 101, Saint Peters, MO, 63376, with a listed phone of (314) 530-6080. NPI 1720308448 was issued on 06/03/2010.
Medicare Part D records for calendar year 2023 show 246 prescription claims written by this provider, covering 60 Medicare beneficiaries and totaling roughly $192K in drug spend.
Allergy & Immunology Physician is a narrow specialty nationwide, with 3,390 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 | 1720308448 |
|---|---|
| Specialty | Allergy & Immunology Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 06/03/2010 |
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 Sonia Cajigal, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$1.6K
Largest payer
Nevro Corp.
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 2023.
246
Total Claims
$192K
Total Drug Cost
60
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 330
- Total Day Supply
- 9,007
- Generic Drug Cost
- $5K
Patient Demographics
- Average Patient Age
- 69.3 years
- Avg HCC Risk Score
- 0.97
- Gender Split
- 75% female / 25% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Sonia Cajigal, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Trelegy Ellipta
Trelegy Ellipta
34 claims
- Montelukast Sodium
Montelukast Sodium
27 claims
- Ipratropium Bromide
Ipratropium Bromide
26 claims
- Xolair
Xolair
18 claims
- Omeprazole
Omeprazole
14 claims
- Prednisone
Prednisone
14 claims
- Azelastine Hcl 12
Azelastine Hcl
12 claims
- Albuterol Sulfate … 11
Albuterol Sulfate Hfa
11 claims
| Drug | Claims |
|---|---|
| Trelegy Ellipta Fluticasone/Umeclidin/Vilanter | 34 |
| Montelukast Sodium | 27 |
| Ipratropium Bromide | 26 |
| Xolair Omalizumab | 18 |
| Omeprazole | 14 |
| Prednisone | 14 |
| Azelastine Hcl | 12 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 11 |
| Tezspire Tezepelumab-Ekko | 11 |
* 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 Sonia Cajigal, M.D. fits within the Allergy & Immunology Physician landscape nationally.
3,390
Allergy & Immunology Physician Providers in US
52
States with Allergy & Immunology Physician
764
Avg Claims per Provider
Sonia Cajigal, M.D.'s 246 claims are below the specialty average of 764.
Nearby Allergy & Immunology Physician Providers in Missouri
Other clinicians with the same primary specialty enrolled in Missouri, drawn from the same CMS NPPES roster as Cajigal.
Dr. Hassan Ahmad
M.D
Chesterfield, MO
Dr. Bradley Becker
MD
Saint Louis, MO
Dr. Michael Borts
M.D.
Saint Louis, MO
Dr. Barry Cooper
MD
Saint Louis, MO
Dr. Michael Critchlow
M. D.
Sikeston, MO
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 Missouri 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 Sonia Cajigal, M.D.'s specialty? ▼
Sonia Cajigal, M.D. specializes in Allergy & Immunology Physician and practices in Saint Peters, Missouri. Credentials: M.D..
How much does Sonia Cajigal, M.D. prescribe under Medicare Part D? ▼
In 2023, Sonia Cajigal, M.D. wrote 246 Medicare Part D claims totaling $192K in drug costs for 60 beneficiaries.
Where is Sonia Cajigal, M.D. located? ▼
Sonia Cajigal, M.D. is located at 4800 MEXICO RD STE 101, Saint Peters, MO, 63376. Phone: (314) 530-6080.
What is Sonia Cajigal, M.D.'s NPI number? ▼
Sonia Cajigal, M.D.'s National Provider Identifier (NPI) is 1720308448, issued on 06/03/2010.
How many Allergy & Immunology Physician providers are there in the US? ▼
There are 3,390 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 Sonia Cajigal, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Sonia Cajigal, M.D.'s most frequently prescribed drugs include Trelegy Ellipta, Montelukast Sodium, Ipratropium Bromide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Sonia Cajigal, M.D. accept Medicare? ▼
Sonia Cajigal, M.D. appears in CMS Medicare data with 246 Part D claims and 60 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Sonia Cajigal, M.D.'s credentials? ▼
Sonia Cajigal, M.D.'s NPI is 1720308448 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.
- 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.