NPI registry status
Active
2026 NPPES data Specialist NPI 1649243775 MD
Verify on CMS → Mary Dylla, MD
Specialist in Saint Helena, 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 69,608 in Specialist, 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
5K
Medicare Part D claims · 264 beneficiaries · Specialist avg: 1K
Generic prescribing
84%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
6.1/100
▼ 77 pts below national avg 83.1 · Penalty band
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Mary Dylla, MD reported a CMS MIPS final score of 6.1/100 - below the 83.1 national average - and filed 5,462 Medicare Part D claims in 2023.
- 6.1/100
- MIPS score · -77 vs avg
- 5K
- Part D claims, 2023
- 84%
- 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.
Mary Dylla, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
6 2nd percentile higher than 2% 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 Mary Dylla, MD sits
This provider among specialist peers
Across the 4,869 specialist providers who report both Medicare Part D prescribing and a MIPS quality score, Mary Dylla, MD writes more Part D claims than 91% of them and scores higher on MIPS quality than 6% - 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 specialist peer from a representative sample of 60; the gold marker is Mary Dylla, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Mary Dylla, MD?
Below national averagePrimary specialty
Specialist
Medicare Part D claims
5,462 271% vs specialty avg
MIPS final score
6.1/100 77 pts vs avg
Specialty distribution in California
How Specialist compares to other specialties among California providers
Medicare quality performance, MIPS
Mary Dylla, MD's 2023 MIPS final score plotted against the Specialist national average
- MIPS Final Score
- 6.1/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Specialist) - 6.1/100 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).
Mary Dylla, MD appears in the CMS NPPES registry as a Specialist provider holding MD credentials at 1120 POPE ST, Saint Helena, CA, 94574, with a listed phone of (707) 963-7307. NPI 1649243775 was issued on 02/09/2006.
Medicare Part D records for calendar year 2023 show 5,462 prescription claims written by this provider, covering 264 Medicare beneficiaries and totaling roughly $663K in drug spend, split 15% brand-name and 84% generic by claim count, with an opioid prescribing rate of 2.9%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 6.1/100 for the 2023 performance year (Quality 0, Cost 20.5), compared with the national average of 83.1.
Specialist is a high-volume specialty nationwide, with 69,608 enrolled providers across 55 states and an average of 1,474 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 | 1649243775 |
|---|---|
| Specialty | Specialist |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 02/09/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
6.1359
Final Score
Avg: 83.1
0
Quality
20.453
Cost
Reporting: Individual
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 Mary Dylla, MD. To verify Mary Dylla, 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.
Brand vs generic prescribing mix · Typical
Mary Dylla, MD - brand share 15.0%
Specialist average
15% brand-name claims vs 84% generic, on 5,462 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.
5,462
Total Claims
$663K
Total Drug Cost
264
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 11,029
- Total Day Supply
- 323,850
- Brand vs Generic
- 15% brand / 84% generic
- Brand Drug Cost
- $539K
- Generic Drug Cost
- $124K
- Opioid Claims
- 160 (2.9% rate)
- Antibiotic Claims
- 120
Patient Demographics
- Average Patient Age
- 76.7 years
- Avg HCC Risk Score
- 0.93
- Gender Split
- 67% female / 33% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Mary Dylla, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Rosuvastatin Calcium
Rosuvastatin Calcium
333 claims
- Atorvastatin Calcium
Atorvastatin Calcium
329 claims
- Levothyroxine Sodium
Levothyroxine Sodium
237 claims
- Amlodipine Besylate
Amlodipine Besylate
196 claims
- Alendronate Sodium
Alendronate Sodium
152 claims
- Zolpidem Tartrate
Zolpidem Tartrate
150 claims
- Tamsulosin Hcl
Tamsulosin Hcl
135 claims
- Losartan Potassium 126
Losartan Potassium
126 claims
| Drug | Claims |
|---|---|
| Rosuvastatin Calcium | 333 |
| Atorvastatin Calcium | 329 |
| Levothyroxine Sodium | 237 |
| Amlodipine Besylate | 196 |
| Alendronate Sodium | 152 |
| Zolpidem Tartrate | 150 |
| Tamsulosin Hcl | 135 |
| Losartan Potassium | 126 |
| Ezetimibe | 123 |
| Metoprolol Succinate | 95 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Specialist Overview
How Mary Dylla, MD fits within the Specialist landscape nationally.
69,608
Specialist Providers in US
55
States with Specialist
1,474
Avg Claims per Provider
Mary Dylla, MD's 5,462 claims are above the specialty average of 1,474.
Nearby Specialist Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Dylla.
Adrienne Abad Santos
San Francisco, CA
Dr. Brenda Abarca
MD
Torrance, CA
Dr. Fatemeh Abbasi
PT
Van Nuys, CA
Dr. Erlinda Abcede
M.D.
Cudahy, CA
Dr. Maher Abdallah
M.D.
Palm Springs, CA
Compare Specialist 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 Specialist 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 Mary Dylla, MD's specialty? ▼
Mary Dylla, MD specializes in Specialist and practices in Saint Helena, California. Credentials: MD.
How much does Mary Dylla, MD prescribe under Medicare Part D? ▼
In 2023, Mary Dylla, MD wrote 5,462 Medicare Part D claims totaling $663K in drug costs for 264 beneficiaries.
What is Mary Dylla, MD's Medicare quality score? ▼
Mary Dylla, MD has a CMS MIPS Final Score of 6.1/100 (Quality: 0, Cost: 20.5). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Mary Dylla, MD located? ▼
Mary Dylla, MD is located at 1120 POPE ST, Saint Helena, CA, 94574. Phone: (707) 963-7307.
What is Mary Dylla, MD's NPI number? ▼
Mary Dylla, MD's National Provider Identifier (NPI) is 1649243775, issued on 02/09/2006.
Does Mary Dylla, MD prescribe more brand-name or generic drugs? ▼
Mary Dylla, MD's prescribing is 15% brand-name and 84% generic drugs by claim count, with $539K in brand drug costs.
Does Mary Dylla, MD prescribe opioids? ▼
Yes, Mary Dylla, MD had 160 opioid claims in 2023 with an opioid prescribing rate of 2.9%.
How many Specialist providers are there in the US? ▼
There are 69,608 Specialist providers across 55 states in the US. The average Specialist provider writes 1,474 Medicare Part D claims per year.
What drugs does Mary Dylla, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Mary Dylla, MD's most frequently prescribed drugs include Rosuvastatin Calcium, Atorvastatin Calcium, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mary Dylla, MD accept Medicare? ▼
Mary Dylla, MD appears in CMS Medicare data with 5,462 Part D claims and 264 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mary Dylla, MD's credentials? ▼
Mary Dylla, MD's NPI is 1649243775 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
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.