NPI registry status
Active
2026 NPPES data Psychiatry Physician NPI 1407840481 MD
Verify on CMS → John Robertson, MD
Psychiatry Physician in Knoxville, Tennessee.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 54,383 in Psychiatry 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
3K
Medicare Part D claims · 162 beneficiaries · Psychiatry Physician avg: 1K
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$2.3K
119 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
John Robertson, MD filed 3,317 Medicare Part D claims in 2024 as a Psychiatry Physician in Knoxville, Tennessee, prescribing 91% generic.
- 3K
- Part D claims, 2024
- 91%
- generic prescribing
- $2.3K
- industry payments (Sunshine Act)
- ≥89th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about John Robertson, MD
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1407840481), first enumerated 09/07/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 3,317 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- Reported
Industry payment transparency
$2.3K in reported industry payments (119 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1407840481 · Psychiatry Physician
NPI-10 · ENUM-LEGACY · TAX-MEGA · RX-MID · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1407840481
- ENUM-LEGACY 2005
- TAX-MEGA 54K Psychiatry Physician
- RX-MID 3,317
- BOOK-LIGHT 684 in Tennessee
- PHOTO-ENUM Beng Choon Ho, MD · 2005
John Robertson, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
3,317 ≥ 89th percentile 89% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
◑
Board-eligible specialty (heuristic, not verified)
John Robertson, 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 John Robertson, MD?
Quality data not reportedPrimary specialty
Psychiatry Physician
Medicare Part D claims
3,317 228% vs specialty avg
Specialty distribution in Tennessee
How Psychiatry Physician compares to other specialties among Tennessee 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 Psychiatry 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).
Practice Address
Provider Details
| NPI | 1407840481 |
|---|---|
| Specialty | Psychiatry Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 09/07/2005 |
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for John Robertson, MD. Source: openpaymentsdata.cms.gov.
Total received
$2.3K
Largest payer
ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.)
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Brand vs generic prescribing mix · Generic-heavy
John Robertson, MD - brand share 9.0%
Psychiatry Physician average
9% brand-name claims vs 91% generic, on 3,317 2024 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 2024.
3,317
Total Claims
$323K
Total Drug Cost
162
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 4,265.733
- Total Day Supply
- 123,725
- Brand vs Generic
- 9% brand / 91% generic
- Brand Drug Cost
- $235K
- Generic Drug Cost
- $88K
- Opioid Claims
- 20 (0.6% rate)
Patient Demographics
- Average Patient Age
- 60.1 years
- Avg HCC Risk Score
- 1.18
- Gender Split
- 52% female / 48% male
- Age Distribution
- <65: 76, 65-74: 66, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What John Robertson, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Quetiapine Fumarate
Quetiapine Fumarate
214 claims
- Lamotrigine
Lamotrigine
193 claims
- Clonazepam
Clonazepam
181 claims
- Aripiprazole
Aripiprazole
176 claims
- Levothyroxine Sodium
Levothyroxine Sodium
136 claims
- Clozapine
Clozapine
130 claims
- Alprazolam
Alprazolam
124 claims
- Bupropion Xl
Bupropion Xl
103 claims
| Drug | Claims |
|---|---|
| Quetiapine Fumarate | 214 |
| Lamotrigine | 193 |
| Clonazepam | 181 |
| Aripiprazole | 176 |
| Levothyroxine Sodium | 136 |
| Clozapine | 130 |
| Alprazolam | 124 |
| Bupropion Xl Bupropion Hcl | 103 |
| Lithium Carbonate | 96 |
| Dextroamphetamine-Amphet Er Dextroamphetamine/Amphetamine | 92 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Psychiatry Physician Overview
How John Robertson, MD fits within the Psychiatry Physician landscape nationally.
54,383
Psychiatry Physician Providers in US
56
States with Psychiatry Physician
1,010
Avg Claims per Provider
John Robertson, MD's 3,317 claims are above the specialty average of 1,010.
Nationwide Psychiatry Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Robertson, both outside Tennessee so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Psychiatry Physician Providers in Tennessee
Other clinicians with the same primary specialty enrolled in Tennessee, drawn from the same CMS NPPES roster as Robertson.
One of 684 Psychiatry Physician providers enrolled in Tennessee, 5 are shown here.
Soureya Abbo
Clarksville, TN
Dr. Amanda Actor
MD
Nashville, TN
Dr. Lori Adelson
MD
Nashville, TN
Dr. Felix Adetunji
MD
Goodlettsville, TN
Dr. Saleh Ahmad
MD
Murfreesboro, TN
Compare Psychiatry Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is John Robertson, MD's specialty? ▼
John Robertson, MD specializes in Psychiatry Physician and practices in Knoxville, Tennessee. Credentials: MD.
How much does John Robertson, MD prescribe under Medicare Part D? ▼
In 2024, John Robertson, MD wrote 3,317 Medicare Part D claims totaling $323K in drug costs for 162 beneficiaries.
Where is John Robertson, MD located? ▼
John Robertson, MD is located at 10241 KINGSTON PIKE, Knoxville, TN, 37922. Phone: (865) 691-1165.
What is John Robertson, MD's NPI number? ▼
John Robertson, MD's National Provider Identifier (NPI) is 1407840481, issued on 09/07/2005.
Does John Robertson, MD prescribe more brand-name or generic drugs? ▼
John Robertson, MD's prescribing is 9% brand-name and 91% generic drugs by claim count, with $235K in brand drug costs.
Does John Robertson, MD prescribe opioids? ▼
Yes, John Robertson, MD had 20 opioid claims in 2024 with an opioid prescribing rate of 0.6%.
How many Psychiatry Physician providers are there in the US? ▼
There are 54,383 Psychiatry Physician providers across 56 states in the US. The average Psychiatry Physician provider writes 1,010 Medicare Part D claims per year.
What drugs does John Robertson, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, John Robertson, MD's most frequently prescribed drugs include Quetiapine Fumarate, Lamotrigine, Clonazepam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does John Robertson, MD accept Medicare? ▼
John Robertson, MD appears in CMS Medicare data with 3,317 Part D claims and 162 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify John Robertson, MD's credentials? ▼
John Robertson, MD's NPI is 1407840481 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 (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.