NPI registry status
Active
2026 NPPES data Physician Assistant NPI 1154745321 PAC
Verify on CMS → Chelsea Bates, PAC
Physician Assistant in Denver, Colorado.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 156,084 in Physician Assistant, 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
417
Medicare Part D claims · 142 beneficiaries · Physician Assistant avg: 832
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, 2024
What the federal data shows
Chelsea Bates, PAC filed 417 Medicare Part D claims in 2024 as a Physician Assistant in Denver, Colorado, prescribing 97% generic.
- 417
- Part D claims, 2024
- 97%
- generic prescribing
- ≥61st
- 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 Chelsea Bates, PAC
Bare NPI registry listing — limited federal enrichment beyond basic enumeration. Verify all credentials with official sources.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1154745321), first enumerated 02/09/2014.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 417 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- 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 1154745321 · Physician Assistant
NPI-10 · ENUM-MID · TAX-MEGA · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1154745321
- ENUM-MID 2014
- TAX-MEGA 156K Physician Assistant
- RX-LIGHT 417
- BOOK-LIGHT 3,872 in Colorado
- PHOTO-ENUM Douglas Lynch, PA · 2014
Chelsea Bates, PAC's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
417 ≥ 61st percentile 61% 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
What does the federal data show about Chelsea Bates, PAC?
Quality data not reportedPrimary specialty
Physician Assistant
Medicare Part D claims
417 50% vs specialty avg
Specialty distribution in Colorado
How Physician Assistant compares to other specialties among Colorado 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 Physician Assistant. 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 | 1154745321 |
|---|---|
| Specialty | Physician Assistant |
| Credentials | PAC |
| Gender | Female |
| NPI Issued | 02/09/2014 |
Brand vs generic prescribing mix · Generic-heavy
Chelsea Bates, PAC - brand share 3.0%
Physician Assistant average
3% brand-name claims vs 97% generic, on 417 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.
417
Total Claims
$12K
Total Drug Cost
142
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 423
- Total Day Supply
- 4,153
- Brand vs Generic
- 3% brand / 97% generic
- Brand Drug Cost
- $6K
- Generic Drug Cost
- $6K
- Opioid Claims
- 151 (36.2% rate)
- Antibiotic Claims
- 24
Patient Demographics
- Average Patient Age
- 73.1 years
- Avg HCC Risk Score
- 0.90
- Gender Split
- 65% female / 35% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Chelsea Bates, PAC prescribes most
Top Medicare Part D drugs by claim count, 2024
- Oxycodone Hcl
Oxycodone Hcl
101 claims
- Ondansetron Odt
Ondansetron Odt
72 claims
- Naloxone Hcl
Naloxone Hcl
58 claims
- Pantoprazole Sodium
Pantoprazole Sodium
49 claims
- Tramadol Hcl 34
Tramadol Hcl
34 claims
- Meloxicam 24
Meloxicam
24 claims
- Cephalexin 19
Cephalexin
19 claims
| Drug | Claims |
|---|---|
| Oxycodone Hcl | 101 |
| Ondansetron Odt Ondansetron | 72 |
| Naloxone Hcl | 58 |
| Pantoprazole Sodium | 49 |
| Tramadol Hcl | 34 |
| Meloxicam | 24 |
| Cephalexin | 19 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Physician Assistant Overview
How Chelsea Bates, PAC fits within the Physician Assistant landscape nationally.
156,084
Physician Assistant Providers in US
56
States with Physician Assistant
832
Avg Claims per Provider
Chelsea Bates, PAC's 417 claims are below the specialty average of 832.
Nationwide Physician Assistant peers with similar MIPS or enrollment year
Two federal-record peer sets for Bates, both outside Colorado so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2014)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Physician Assistant Providers in Colorado
Other clinicians with the same primary specialty enrolled in Colorado, drawn from the same CMS NPPES roster as Bates.
One of 3,872 Physician Assistant providers enrolled in Colorado, 5 are shown here.
Hannah Abbe
PA
Denver, CO
Elise Abbott
Fort Collins, CO
Jennifer Abbott
PA-C
Colorado Springs, CO
Alexander Abbruzzese
Fort Carson, CO
Mary Abraham
PA-C
Colorado Springs, CO
Compare Physician Assistant nationally: see state-by-state distribution →
Frequently Asked Questions
What is Chelsea Bates, PAC's specialty? ▼
Chelsea Bates, PAC specializes in Physician Assistant and practices in Denver, Colorado. Credentials: PAC.
How much does Chelsea Bates, PAC prescribe under Medicare Part D? ▼
In 2024, Chelsea Bates, PAC wrote 417 Medicare Part D claims totaling $12K in drug costs for 142 beneficiaries.
Where is Chelsea Bates, PAC located? ▼
Chelsea Bates, PAC is located at 2045 N FRANKLIN ST, Denver, CO, 80205. Phone: (303) 338-4545.
What is Chelsea Bates, PAC's NPI number? ▼
Chelsea Bates, PAC's National Provider Identifier (NPI) is 1154745321, issued on 02/09/2014.
Does Chelsea Bates, PAC prescribe more brand-name or generic drugs? ▼
Chelsea Bates, PAC's prescribing is 3% brand-name and 97% generic drugs by claim count, with $6K in brand drug costs.
Does Chelsea Bates, PAC prescribe opioids? ▼
Yes, Chelsea Bates, PAC had 151 opioid claims in 2024 with an opioid prescribing rate of 36.2%.
How many Physician Assistant providers are there in the US? ▼
There are 156,084 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 832 Medicare Part D claims per year.
What drugs does Chelsea Bates, PAC prescribe most often? ▼
Based on 2024 Medicare Part D data, Chelsea Bates, PAC's most frequently prescribed drugs include Oxycodone Hcl, Ondansetron Odt, Naloxone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Chelsea Bates, PAC accept Medicare? ▼
Chelsea Bates, PAC appears in CMS Medicare data with 417 Part D claims and 142 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Chelsea Bates, PAC's credentials? ▼
Chelsea Bates, PAC's NPI is 1154745321 with credentials PAC. 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.