NPI registry status
Active
2026 NPPES data Pulmonary Disease Physician NPI 1083698997 D.O.
Verify on CMS → Gary Berg, D.O.
Pulmonary Disease Physician in Madison Heights, Michigan.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 9,271 in Pulmonary 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
380
Medicare Part D claims · 63 beneficiaries · Pulmonary Disease Physician avg: 1K
Generic prescribing
48%
generic claims · 52% 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
Gary Berg, D.O. filed 380 Medicare Part D claims in 2023 as a Pulmonary Disease Physician in Madison Heights, Michigan, prescribing 48% generic.
- 380
- Part D claims, 2023
- 48%
- 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.
Gary Berg, D.O.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
380 Top 43% higher than 57% 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)
Gary Berg, D.O. 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 Gary Berg, D.O.?
Quality data not reportedPrimary specialty
Pulmonary Disease Physician
Medicare Part D claims
380 74% vs specialty avg
Specialty distribution in Michigan
How Pulmonary Disease Physician compares to other specialties among Michigan 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 Pulmonary 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).
Gary Berg, D.O. appears in the CMS NPPES registry as a Pulmonary Disease Physician provider holding D.O. credentials at 27483 DEQUINDRE RD, Madison Heights, MI, 48071, with a listed phone of (248) 398-4081. NPI 1083698997 was issued on 12/05/2005.
Medicare Part D records for calendar year 2023 show 380 prescription claims written by this provider, covering 63 Medicare beneficiaries and totaling roughly $108K in drug spend, split 52% brand-name and 48% generic by claim count.
Pulmonary Disease Physician is a mid-sized specialty nationwide, with 9,271 enrolled providers across 53 states and an average of 1,457 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 | 1083698997 |
|---|---|
| Specialty | Pulmonary Disease Physician |
| Credentials | D.O. |
| Gender | Male |
| NPI Issued | 12/05/2005 |
License & disciplinary context - Michigan MI-BOM 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 ~41K Michigan medical licensees in 2023 - they are NOT specific to Gary Berg, D.O.. To verify Gary Berg, D.O.'s current license status, search the MI-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
123
Total board actions, Michigan 2023
Across 120 cases
3.00
Actions per 1,000 licensees
Michigan statewide rate
probation
Most common action type
44 cases
MI-BOM 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 Michigan disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Brand-heavy
Gary Berg, D.O. - brand share 52.0%
Pulmonary Disease Physician average
52% brand-name claims vs 48% generic, on 380 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.
380
Total Claims
$108K
Total Drug Cost
63
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 620
- Total Day Supply
- 17,679
- Brand vs Generic
- 52% brand / 48% generic
- Brand Drug Cost
- $94K
- Generic Drug Cost
- $15K
- Antibiotic Claims
- 24
Patient Demographics
- Average Patient Age
- 71.4 years
- Avg HCC Risk Score
- 1.61
- Gender Split
- 73% female / 27% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Gary Berg, D.O. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Trelegy Ellipta
Trelegy Ellipta
56 claims
- Prednisone
Prednisone
44 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
41 claims
- Montelukast Sodium
Montelukast Sodium
41 claims
- Symbicort 19
Symbicort
19 claims
- Ventolin Hfa 18
Ventolin Hfa
18 claims
- Azithromycin 15
Azithromycin
15 claims
- Breo Ellipta 11
Breo Ellipta
11 claims
| Drug | Claims |
|---|---|
| Trelegy Ellipta Fluticasone/Umeclidin/Vilanter | 56 |
| Prednisone | 44 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 41 |
| Montelukast Sodium | 41 |
| Symbicort Budesonide/Formoterol Fumarate | 19 |
| Ventolin Hfa Albuterol Sulfate | 18 |
| Azithromycin | 15 |
| Breo Ellipta Fluticasone/Vilanterol | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Pulmonary Disease Physician Overview
How Gary Berg, D.O. fits within the Pulmonary Disease Physician landscape nationally.
9,271
Pulmonary Disease Physician Providers in US
53
States with Pulmonary Disease Physician
1,457
Avg Claims per Provider
Gary Berg, D.O.'s 380 claims are below the specialty average of 1,457.
Nearby Pulmonary Disease Physician Providers in Michigan
Other clinicians with the same primary specialty enrolled in Michigan, drawn from the same CMS NPPES roster as Berg.
Dr. Thomas Abraham
M.D.
Kalamazoo, MI
Dr. Chaitanya Acharya
MD
Grand Rapids, MI
Dr. Abdulgadir Adam
M.D.
Royal Oak, MI
Dr. Kewal Aggarwal
MD
Rochester, MI
Dr. Fazal Ahmad
MD
Auburn Hills, MI
Compare Pulmonary 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 Michigan medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Pulmonary 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 Gary Berg, D.O.'s specialty? ▼
Gary Berg, D.O. specializes in Pulmonary Disease Physician and practices in Madison Heights, Michigan. Credentials: D.O..
How much does Gary Berg, D.O. prescribe under Medicare Part D? ▼
In 2023, Gary Berg, D.O. wrote 380 Medicare Part D claims totaling $108K in drug costs for 63 beneficiaries.
Where is Gary Berg, D.O. located? ▼
Gary Berg, D.O. is located at 27483 DEQUINDRE RD, Madison Heights, MI, 48071. Phone: (248) 398-4081.
What is Gary Berg, D.O.'s NPI number? ▼
Gary Berg, D.O.'s National Provider Identifier (NPI) is 1083698997, issued on 12/05/2005.
Does Gary Berg, D.O. prescribe more brand-name or generic drugs? ▼
Gary Berg, D.O.'s prescribing is 52% brand-name and 48% generic drugs by claim count, with $94K in brand drug costs.
How many Pulmonary Disease Physician providers are there in the US? ▼
There are 9,271 Pulmonary Disease Physician providers across 53 states in the US. The average Pulmonary Disease Physician provider writes 1,457 Medicare Part D claims per year.
What drugs does Gary Berg, D.O. prescribe most often? ▼
Based on 2023 Medicare Part D data, Gary Berg, D.O.'s most frequently prescribed drugs include Trelegy Ellipta, Prednisone, Albuterol Sulfate Hfa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Gary Berg, D.O. accept Medicare? ▼
Gary Berg, D.O. appears in CMS Medicare data with 380 Part D claims and 63 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Gary Berg, D.O.'s credentials? ▼
Gary Berg, D.O.'s NPI is 1083698997 with credentials D.O.. 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.