NPI registry status
Active
2026 NPPES data Infectious Disease Physician NPI 1841250222 PA
Verify on CMS → Melissa Schreiber, PA
Infectious Disease Physician in Carmichael, 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 8,314 in Infectious Disease 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
143
Medicare Part D claims · 11 beneficiaries · Infectious Disease Physician avg: 816
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Melissa Schreiber, PA filed 143 Medicare Part D claims in 2023 as a Infectious Disease Physician in Carmichael, California, prescribing 88% generic.
- 143
- Part D claims, 2023
- 88%
- generic prescribing
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.
Melissa Schreiber, PA's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
143 35th percentile higher than 35% 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)
Melissa Schreiber, PA 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 Melissa Schreiber, PA?
Quality data not reportedPrimary specialty
Infectious Disease Physician
Medicare Part D claims
143 82% vs specialty avg
Specialty distribution in California
How Infectious Disease Physician compares to other specialties among California 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 Infectious Disease 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).
Melissa Schreiber, PA appears in the CMS NPPES registry as an Infectious Disease Physician provider holding PA credentials at 6555 COYLE AVE, Carmichael, CA, 95608, with a listed phone of (916) 201-1388. NPI 1841250222 was issued on 03/28/2006.
Medicare Part D records for calendar year 2023 show 143 prescription claims written by this provider, covering 11 Medicare beneficiaries and totaling roughly $9K in drug spend, split 12% brand-name and 88% generic by claim count.
Infectious Disease Physician is a mid-sized specialty nationwide, with 8,314 enrolled providers across 54 states and an average of 816 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 | 1841250222 |
|---|---|
| Specialty | Infectious Disease Physician |
| Credentials | PA |
| Gender | Female |
| NPI Issued | 03/28/2006 |
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 Melissa Schreiber, PA. To verify Melissa Schreiber, PA'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.
Brand vs generic prescribing mix · Typical
Melissa Schreiber, PA - brand share 12.0%
Infectious Disease Physician average
12% brand-name claims vs 88% generic, on 143 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.
143
Total Claims
$9K
Total Drug Cost
11
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 143
- Total Day Supply
- 4,216
- Brand vs Generic
- 12% brand / 88% generic
- Brand Drug Cost
- $4K
- Generic Drug Cost
- $5K
Patient Demographics
- Average Patient Age
- 84.0 years
- Avg HCC Risk Score
- 1.65
- Age Distribution
- <65: 0, 65-74: N/A, 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 Melissa Schreiber, PA prescribes most
Top Medicare Part D drugs by claim count, 2023
- Fluticasone Propio…
Fluticasone Propionate
13 claims
- Atorvastatin Calcium
Atorvastatin Calcium
12 claims
- Pantoprazole Sodium
Pantoprazole Sodium
12 claims
- Tolterodine Tartra…
Tolterodine Tartrate Er
12 claims
- Verapamil Hcl
Verapamil Hcl
12 claims
- Allopurinol
Allopurinol
11 claims
| Drug | Claims |
|---|---|
| Fluticasone Propionate | 13 |
| Atorvastatin Calcium | 12 |
| Pantoprazole Sodium | 12 |
| Tolterodine Tartrate Er Tolterodine Tartrate | 12 |
| Verapamil Hcl | 12 |
| Allopurinol | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Infectious Disease Physician Overview
How Melissa Schreiber, PA fits within the Infectious Disease Physician landscape nationally.
8,314
Infectious Disease Physician Providers in US
54
States with Infectious Disease Physician
816
Avg Claims per Provider
Melissa Schreiber, PA's 143 claims are below the specialty average of 816.
Nearby Infectious Disease Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Schreiber.
Dr. Sanaz Abderrahmane
M.D.
Sacramento, CA
Dr. Glen Abergel
M.D.
Oxnard, CA
Dr. Igor Abolnik
MD
Rureka, CA
Dr. Nehkonti Adams
M.D.
San Diego, CA
Dr. Alina Adeel
M.D
La Jolla, CA
Compare Infectious Disease 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 Infectious Disease 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 Melissa Schreiber, PA's specialty? ▼
Melissa Schreiber, PA specializes in Infectious Disease Physician and practices in Carmichael, California. Credentials: PA.
How much does Melissa Schreiber, PA prescribe under Medicare Part D? ▼
In 2023, Melissa Schreiber, PA wrote 143 Medicare Part D claims totaling $9K in drug costs for 11 beneficiaries.
Where is Melissa Schreiber, PA located? ▼
Melissa Schreiber, PA is located at 6555 COYLE AVE, Carmichael, CA, 95608. Phone: (916) 201-1388.
What is Melissa Schreiber, PA's NPI number? ▼
Melissa Schreiber, PA's National Provider Identifier (NPI) is 1841250222, issued on 03/28/2006.
Does Melissa Schreiber, PA prescribe more brand-name or generic drugs? ▼
Melissa Schreiber, PA's prescribing is 12% brand-name and 88% generic drugs by claim count, with $4K in brand drug costs.
How many Infectious Disease Physician providers are there in the US? ▼
There are 8,314 Infectious Disease Physician providers across 54 states in the US. The average Infectious Disease Physician provider writes 816 Medicare Part D claims per year.
What drugs does Melissa Schreiber, PA prescribe most often? ▼
Based on 2023 Medicare Part D data, Melissa Schreiber, PA's most frequently prescribed drugs include Fluticasone Propionate, Atorvastatin Calcium, Pantoprazole Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Melissa Schreiber, PA accept Medicare? ▼
Melissa Schreiber, PA appears in CMS Medicare data with 143 Part D claims and 11 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Melissa Schreiber, PA's credentials? ▼
Melissa Schreiber, PA's NPI is 1841250222 with credentials PA. 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.
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.