NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1700862737 M.D.
Verify on CMS → Adam Brownstein, M.D.
Family Medicine Physician in Milton, Delaware.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 147,640 in Family Medicine 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
2K
Medicare Part D claims · 147 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
92%
generic claims · 7% 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
Adam Brownstein, M.D. filed 1,896 Medicare Part D claims in 2023 as a Family Medicine Physician in Milton, Delaware, prescribing 92% generic.
- 2K
- Part D claims, 2023
- 92%
- 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.
Adam Brownstein, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,896 Top 17% higher than 83% 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)
Adam Brownstein, 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 Adam Brownstein, M.D.?
Quality data not reportedPrimary specialty
Family Medicine Physician
Medicare Part D claims
1,896 45% vs specialty avg
Specialty distribution in Delaware
How Family Medicine Physician compares to other specialties among Delaware 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 Family Medicine 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).
Adam Brownstein, M.D. appears in the CMS NPPES registry as a Family Medicine Physician provider holding M.D. credentials at 611 FEDERAL ST, Milton, DE, 19968, with a listed phone of (302) 329-9616. NPI 1700862737 was issued on 12/21/2005.
Medicare Part D records for calendar year 2023 show 1,896 prescription claims written by this provider, covering 147 Medicare beneficiaries and totaling roughly $134K in drug spend, split 7% brand-name and 92% generic by claim count, with an opioid prescribing rate of 2.7%.
Family Medicine Physician is a high-volume specialty nationwide, with 147,640 enrolled providers across 56 states and an average of 3,418 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 | 1700862737 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 12/21/2005 |
Brand vs generic prescribing mix · Generic-heavy
Adam Brownstein, M.D. - brand share 7.0%
Family Medicine Physician average
7% brand-name claims vs 92% generic, on 1,896 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.
1,896
Total Claims
$134K
Total Drug Cost
147
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 4,783
- Total Day Supply
- 140,225
- Brand vs Generic
- 7% brand / 92% generic
- Brand Drug Cost
- $90K
- Generic Drug Cost
- $43K
- Opioid Claims
- 51 (2.7% rate)
- Antibiotic Claims
- 45
Patient Demographics
- Average Patient Age
- 72.3 years
- Avg HCC Risk Score
- 0.81
- Gender Split
- 52% female / 48% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Adam Brownstein, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
157 claims
- Rosuvastatin Calcium
Rosuvastatin Calcium
89 claims
- Metoprolol Succinate
Metoprolol Succinate
77 claims
- Levothyroxine Sodium
Levothyroxine Sodium
67 claims
- Lisinopril
Lisinopril
67 claims
- Sertraline Hcl
Sertraline Hcl
63 claims
- Losartan Potassium 60
Losartan Potassium
60 claims
- Hydrochlorothiazide 54
Hydrochlorothiazide
54 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 157 |
| Rosuvastatin Calcium | 89 |
| Metoprolol Succinate | 77 |
| Levothyroxine Sodium | 67 |
| Lisinopril | 67 |
| Sertraline Hcl | 63 |
| Losartan Potassium | 60 |
| Hydrochlorothiazide | 54 |
| Amlodipine Besylate | 46 |
| Lisinopril-Hydrochlorothiazide Lisinopril/Hydrochlorothiazide | 46 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Medicine Physician Overview
How Adam Brownstein, M.D. fits within the Family Medicine Physician landscape nationally.
147,640
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider
Adam Brownstein, M.D.'s 1,896 claims are below the specialty average of 3,418.
Nearby Family Medicine Physician Providers in Delaware
Other clinicians with the same primary specialty enrolled in Delaware, drawn from the same CMS NPPES roster as Brownstein.
Dr. Remedios Abad
MD
Wilmington, DE
Dr. Heran Abiye
MD
Newark, DE
Dr. Jerome Abrams
M.D.
Dover, DE
Dr. Gregory Adams
M.D.
Bear, DE
Dr. Rakesh Agarwal
M.D.
Wilmington, DE
Compare Family Medicine 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 Delaware medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Family Medicine 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 Adam Brownstein, M.D.'s specialty? ▼
Adam Brownstein, M.D. specializes in Family Medicine Physician and practices in Milton, Delaware. Credentials: M.D..
How much does Adam Brownstein, M.D. prescribe under Medicare Part D? ▼
In 2023, Adam Brownstein, M.D. wrote 1,896 Medicare Part D claims totaling $134K in drug costs for 147 beneficiaries.
Where is Adam Brownstein, M.D. located? ▼
Adam Brownstein, M.D. is located at 611 FEDERAL ST, Milton, DE, 19968. Phone: (302) 329-9616.
What is Adam Brownstein, M.D.'s NPI number? ▼
Adam Brownstein, M.D.'s National Provider Identifier (NPI) is 1700862737, issued on 12/21/2005.
Does Adam Brownstein, M.D. prescribe more brand-name or generic drugs? ▼
Adam Brownstein, M.D.'s prescribing is 7% brand-name and 92% generic drugs by claim count, with $90K in brand drug costs.
Does Adam Brownstein, M.D. prescribe opioids? ▼
Yes, Adam Brownstein, M.D. had 51 opioid claims in 2023 with an opioid prescribing rate of 2.7%.
How many Family Medicine Physician providers are there in the US? ▼
There are 147,640 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does Adam Brownstein, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Adam Brownstein, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Rosuvastatin Calcium, Metoprolol Succinate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Adam Brownstein, M.D. accept Medicare? ▼
Adam Brownstein, M.D. appears in CMS Medicare data with 1,896 Part D claims and 147 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Adam Brownstein, M.D.'s credentials? ▼
Adam Brownstein, M.D.'s NPI is 1700862737 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.