NPI registry status
Active
2026 NPPES data Physical Medicine & Rehabilitation Physician NPI 1447303631 MD
Verify on CMS → Jeffrey Grolig, MD
Physical Medicine & Rehabilitation Physician in Redding, 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 15,336 in Physical Medicine & Rehabilitation 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 · 49 beneficiaries · Physical Medicine & Rehabilitation Physician avg: 781
Generic prescribing
97%
generic claims · 3% 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
Jeffrey Grolig, MD filed 1,112 Medicare Part D claims in 2023 as a Physical Medicine & Rehabilitation Physician in Redding, California, prescribing 97% generic.
- 1K
- Part D claims, 2023
- 97%
- 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.
Jeffrey Grolig, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,112 Top 23% higher than 77% 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)
Jeffrey Grolig, MD 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 Jeffrey Grolig, MD?
Quality data not reportedPrimary specialty
Physical Medicine & Rehabilitation Physician
Medicare Part D claims
1,112 42% vs specialty avg
Specialty distribution in California
How Physical Medicine & Rehabilitation 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 Physical Medicine & Rehabilitation 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).
Jeffrey Grolig, MD appears in the CMS NPPES registry as a Physical Medicine & Rehabilitation Physician provider holding MD credentials at 5000 BECHELLI LANE, Redding, CA, 96002, with a listed phone of (530) 221-2520. NPI 1447303631 was issued on 01/19/2007.
Medicare Part D records for calendar year 2023 show 1,112 prescription claims written by this provider, covering 49 Medicare beneficiaries and totaling roughly $45K in drug spend, split 3% brand-name and 97% generic by claim count, with an opioid prescribing rate of 31.5%.
Physical Medicine & Rehabilitation Physician is a mid-sized specialty nationwide, with 15,336 enrolled providers across 54 states and an average of 781 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 | 1447303631 |
|---|---|
| Specialty | Physical Medicine & Rehabilitation Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 01/19/2007 |
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 Jeffrey Grolig, MD. To verify Jeffrey Grolig, 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 · Generic-heavy
Jeffrey Grolig, MD - brand share 3.0%
Physical Medicine & Rehabilitation Physician average
3% brand-name claims vs 97% generic, on 1,112 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.
1,112
Total Claims
$45K
Total Drug Cost
49
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,410
- Total Day Supply
- 38,047
- Brand vs Generic
- 3% brand / 97% generic
- Brand Drug Cost
- $7K
- Generic Drug Cost
- $39K
- Opioid Claims
- 350 (31.5% rate)
Patient Demographics
- Average Patient Age
- 69.9 years
- Avg HCC Risk Score
- 1.09
- Gender Split
- 57% female / 43% male
- Age Distribution
- <65: 15, 65-74: 17, 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 Jeffrey Grolig, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
137 claims
- Oxycodone-Acetamin…
Oxycodone-Acetaminophen
92 claims
- Gabapentin
Gabapentin
90 claims
- Buprenorphine 45
Buprenorphine
45 claims
- Tramadol Hcl 45
Tramadol Hcl
45 claims
- Zolpidem Tartrate 43
Zolpidem Tartrate
43 claims
- Trazodone Hcl 40
Trazodone Hcl
40 claims
- Celecoxib 34
Celecoxib
34 claims
| Drug | Claims |
|---|---|
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 137 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 92 |
| Gabapentin | 90 |
| Buprenorphine | 45 |
| Tramadol Hcl | 45 |
| Zolpidem Tartrate | 43 |
| Trazodone Hcl | 40 |
| Celecoxib | 34 |
| Metformin Hcl | 31 |
| Omeprazole | 30 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Physical Medicine & Rehabilitation Physician in CA →
All providers in California →
Compare specialties →
Physical Medicine & Rehabilitation Physician Overview
How Jeffrey Grolig, MD fits within the Physical Medicine & Rehabilitation Physician landscape nationally.
15,336
Physical Medicine & Rehabilitation Physician Providers in US
54
States with Physical Medicine & Rehabilitation Physician
781
Avg Claims per Provider
Jeffrey Grolig, MD's 1,112 claims are above the specialty average of 781.
Nearby Physical Medicine & Rehabilitation Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Grolig.
Dr. Payandeh Abadee
M.D.
San Pedro, CA
Dr. Sammantha Abbott
DPT
Eureka, CA
Dr. Alexan Abdel-Malek
MD
Sylmar, CA
Dr. Alicia Abels
M.D.
Folsom, CA
Dr. Gary Abrams
M.D.
San Francisco, CA
Compare Physical Medicine & Rehabilitation 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 Physical Medicine & Rehabilitation 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 Jeffrey Grolig, MD's specialty? ▼
Jeffrey Grolig, MD specializes in Physical Medicine & Rehabilitation Physician and practices in Redding, California. Credentials: MD.
How much does Jeffrey Grolig, MD prescribe under Medicare Part D? ▼
In 2023, Jeffrey Grolig, MD wrote 1,112 Medicare Part D claims totaling $45K in drug costs for 49 beneficiaries.
Where is Jeffrey Grolig, MD located? ▼
Jeffrey Grolig, MD is located at 5000 BECHELLI LANE, Redding, CA, 96002. Phone: (530) 221-2520.
What is Jeffrey Grolig, MD's NPI number? ▼
Jeffrey Grolig, MD's National Provider Identifier (NPI) is 1447303631, issued on 01/19/2007.
Does Jeffrey Grolig, MD prescribe more brand-name or generic drugs? ▼
Jeffrey Grolig, MD's prescribing is 3% brand-name and 97% generic drugs by claim count, with $7K in brand drug costs.
Does Jeffrey Grolig, MD prescribe opioids? ▼
Yes, Jeffrey Grolig, MD had 350 opioid claims in 2023 with an opioid prescribing rate of 31.5%.
How many Physical Medicine & Rehabilitation Physician providers are there in the US? ▼
There are 15,336 Physical Medicine & Rehabilitation Physician providers across 54 states in the US. The average Physical Medicine & Rehabilitation Physician provider writes 781 Medicare Part D claims per year.
What drugs does Jeffrey Grolig, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Jeffrey Grolig, MD's most frequently prescribed drugs include Hydrocodone-Acetaminophen, Oxycodone-Acetaminophen, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Jeffrey Grolig, MD accept Medicare? ▼
Jeffrey Grolig, MD appears in CMS Medicare data with 1,112 Part D claims and 49 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Jeffrey Grolig, MD's credentials? ▼
Jeffrey Grolig, MD's NPI is 1447303631 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.
- 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.