NPI registry status
Active
2026 NPPES data Allergy Physician NPI 1831352350 MD
Verify on CMS → Whitney Rassbach, MD
Allergy Physician in Monterey, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,017 in Allergy 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
1K
Medicare Part D claims · 261 beneficiaries · Allergy Physician avg: 755
MIPS score
26.7/100
▼ 56 pts below national avg 83.1 · Below average
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Whitney Rassbach, MD reported a CMS MIPS final score of 26.7/100 - below the 83.1 national average - and filed 1,117 Medicare Part D claims in 2023.
- 26.7/100
- MIPS score · -56 vs avg
- 1K
- 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.
Whitney Rassbach, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
27 3rd percentile higher than 3% of 477,587 scored providers
Each bar is a band; taller bars hold more scored 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.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Whitney Rassbach, MD sits
This provider among allergy physician peers
Across the 175 allergy physician providers who report both Medicare Part D prescribing and a MIPS quality score, Whitney Rassbach, MD writes more Part D claims than 63% of them and scores higher on MIPS quality than 7% - 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 physician peer from a representative sample of 60; the gold marker is Whitney Rassbach, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Whitney Rassbach, MD 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 Whitney Rassbach, MD?
Below national averagePrimary specialty
Allergy Physician
Medicare Part D claims
1,117 48% vs specialty avg
MIPS final score
26.7/100 56.4 pts vs avg
Specialty distribution in California
How Allergy Physician compares to other specialties among California providers
Medicare quality performance, MIPS
Whitney Rassbach, MD's 2023 MIPS final score plotted against the Allergy Physician national average
- MIPS Final Score
- 26.7/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Allergy Physician) - 26.7/100 vs national avg 83.1
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).
Whitney Rassbach, MD appears in the CMS NPPES registry as an Allergy Physician provider holding MD credentials at 337 EL DORADO ST STE 2A, Monterey, CA, 93940, with a listed phone of (831) 649-4044. NPI 1831352350 was issued on 07/03/2008.
Medicare Part D records for calendar year 2023 show 1,117 prescription claims written by this provider, covering 261 Medicare beneficiaries and totaling roughly $383K in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 26.7/100 for the 2023 performance year (Quality 0, Cost 89), compared with the national average of 83.1.
Allergy Physician is a narrow specialty nationwide, with 1,017 enrolled providers across 50 states and an average of 755 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 | 1831352350 |
|---|---|
| Specialty | Allergy Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 07/03/2008 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
26.711
Final Score
Avg: 83.1
0
Quality
89.0365
Cost
0
Promoting Interoperability
Reporting: Individual
Hospital and facility affiliations
Facilities where Whitney Rassbach, 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.
Ucsf Health Medical Foundation
Redwood City, CA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - California MBC 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 - they are NOT specific to Whitney Rassbach, MD. To verify Whitney Rassbach, MD's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases
MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
1,117
Total Claims
$383K
Total Drug Cost
261
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,795
- Total Day Supply
- 49,565
- Generic Drug Cost
- $36K
- Antibiotic Claims
- 58
Patient Demographics
- Average Patient Age
- 74.8 years
- Avg HCC Risk Score
- 0.80
- Gender Split
- 71% female / 29% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Whitney Rassbach, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Azelastine Hcl
Azelastine Hcl
190 claims
- Ipratropium Bromide
Ipratropium Bromide
108 claims
- Montelukast Sodium
Montelukast Sodium
93 claims
- Albuterol Sulfate … 61
Albuterol Sulfate Hfa
61 claims
- Trelegy Ellipta 59
Trelegy Ellipta
59 claims
- Breo Ellipta 51
Breo Ellipta
51 claims
- Spiriva Respimat 42
Spiriva Respimat
42 claims
- Symbicort 41
Symbicort
41 claims
| Drug | Claims |
|---|---|
| Azelastine Hcl | 190 |
| Ipratropium Bromide | 108 |
| Montelukast Sodium | 93 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 61 |
| Trelegy Ellipta Fluticasone/Umeclidin/Vilanter | 59 |
| Breo Ellipta Fluticasone/Vilanterol | 51 |
| Spiriva Respimat Tiotropium Bromide | 42 |
| Symbicort Budesonide/Formoterol Fumarate | 41 |
| Epinephrine | 26 |
| Fluticasone-Salmeterol Fluticasone Propion/Salmeterol | 22 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Allergy Physician Overview
How Whitney Rassbach, MD fits within the Allergy Physician landscape nationally.
1,017
Allergy Physician Providers in US
50
States with Allergy Physician
755
Avg Claims per Provider
Whitney Rassbach, MD's 1,117 claims are above the specialty average of 755.
Nearby Allergy Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Rassbach.
Dr. Shilpi Anand
M.D.
Walnut Creek, CA
Dr. Paula Ardron
MD
Bakersfield, CA
Dr. Tania Aung
M.D.
Vacaville, CA
Dr. Julia Bae
MD
Bakersfield, CA
Dr. Jeffrey Balduzzi
M.D.
Stockton, CA
Compare Allergy 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 California medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Allergy 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 Whitney Rassbach, MD's specialty? ▼
Whitney Rassbach, MD specializes in Allergy Physician and practices in Monterey, California. Credentials: MD.
How much does Whitney Rassbach, MD prescribe under Medicare Part D? ▼
In 2023, Whitney Rassbach, MD wrote 1,117 Medicare Part D claims totaling $383K in drug costs for 261 beneficiaries.
What is Whitney Rassbach, MD's Medicare quality score? ▼
Whitney Rassbach, MD has a CMS MIPS Final Score of 26.7/100 (Quality: 0, Cost: 89). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Whitney Rassbach, MD located? ▼
Whitney Rassbach, MD is located at 337 EL DORADO ST STE 2A, Monterey, CA, 93940. Phone: (831) 649-4044.
What is Whitney Rassbach, MD's NPI number? ▼
Whitney Rassbach, MD's National Provider Identifier (NPI) is 1831352350, issued on 07/03/2008.
How many Allergy Physician providers are there in the US? ▼
There are 1,017 Allergy Physician providers across 50 states in the US. The average Allergy Physician provider writes 755 Medicare Part D claims per year.
What drugs does Whitney Rassbach, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Whitney Rassbach, MD's most frequently prescribed drugs include Azelastine Hcl, Ipratropium Bromide, Montelukast Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Whitney Rassbach, MD accept Medicare? ▼
Whitney Rassbach, MD appears in CMS Medicare data with 1,117 Part D claims and 261 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Whitney Rassbach, MD's credentials? ▼
Whitney Rassbach, MD's NPI is 1831352350 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.
- 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
Compiled from official public sources by the PlainDoctor editorial team.
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.