NPI registry status
Active
2026 NPPES data Pain Medicine Physician NPI 1881702629 M.D.
Verify on CMS → Christopher D Ambrosia, M.D.
Pain Medicine Physician 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 1,006 in Pain 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
1K
Medicare Part D claims · 254 beneficiaries · Pain Medicine Physician avg: 2K
Generic prescribing
96%
generic claims · 4% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
75/100
CMS neutral threshold · no category scores published
Industry payments
$19.15
1 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Christopher D Ambrosia, M.D. carries the neutral CMS MIPS final score of 75/100, assigned where no category was scored - and filed 1,055 Medicare Part D claims in 2024.
- 75/100
- CMS neutral score · not measured
- 1K
- Part D claims, 2024
- 96%
- generic prescribing
- Likely
- board-certified (heuristic)
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 Christopher D Ambrosia, M.D.
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 1881702629), first enumerated 08/29/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 1,055 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
CMS assigned a neutral MIPS final score of 75/100 where no performance category was scored — not a measured quality rank.
Source: CMS Quality Payment Program
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$19.15 in reported industry payments (1 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 1881702629 · Pain Medicine Physician
NPI-10 · ENUM-LEGACY · TAX-NARROW · MIPS-NEUTRAL · RX-MID · BOOK-THIN · PHOTO-ENUM
- NPI-10 1881702629
- ENUM-LEGACY 2006
- TAX-NARROW 1,006
- MIPS-NEUTRAL 75/100
- RX-MID 1,055
- BOOK-THIN 13 in Colorado
- PHOTO-ENUM Ashraf Khan · 2006
Christopher D Ambrosia, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
1,055 ≥ 75th percentile 75% 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 certification likely (heuristic, not verified)
Christopher D Ambrosia, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Christopher D Ambrosia, M.D.?
CMS neutral score, not measuredPrimary specialty
Pain Medicine Physician
Medicare Part D claims
1,055 50% vs specialty avg
MIPS final score
75/100
Specialty distribution in Colorado
How Pain Medicine Physician compares to other specialties among Colorado providers
MIPS score not measured
CMS assigned a neutral 75/100 threshold
CMS did not publish any Quality, Cost, Promoting Interoperability, or Improvement Activities category score for this clinician. This administrative threshold is not comparable with the national average of clinicians whose MIPS score was measured.
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 | 1881702629 |
|---|---|
| Specialty | Pain Medicine Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 08/29/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
75
Final Score
CMS neutral threshold · not measured
Reporting: Group practice
Hospital and facility affiliations
Facilities where Christopher D Ambrosia, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Orthopedic Centers OF Colorado LLC
Parker, CO
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
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 Christopher D Ambrosia, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$19
Largest payer
SCILEX PHARMACEUTICALS 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
Christopher D Ambrosia, M.D. - brand share 4.0%
Pain Medicine Physician average
4% brand-name claims vs 96% generic, on 1,055 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.
1,055
Total Claims
$44K
Total Drug Cost
254
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,374.767
- Total Day Supply
- 38,063
- Brand vs Generic
- 4% brand / 96% generic
- Brand Drug Cost
- $6K
- Generic Drug Cost
- $38K
- Opioid Claims
- 357 (33.8% rate)
Patient Demographics
- Average Patient Age
- 74.5 years
- Avg HCC Risk Score
- 1.32
- Gender Split
- 69% female / 31% male
- Age Distribution
- <65: 12, 65-74: 117, 75-84: 106, 85+: 19
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Christopher D Ambrosia, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Gabapentin
Gabapentin
230 claims
- Baclofen
Baclofen
144 claims
- Morphine Sulfate Er 65
Morphine Sulfate Er
65 claims
- Tramadol Hcl 57
Tramadol Hcl
57 claims
- Hydrocodone-Acetam… 55
Hydrocodone-Acetaminophen
55 claims
- Oxycodone Hcl 55
Oxycodone Hcl
55 claims
- Meloxicam 43
Meloxicam
43 claims
- Methocarbamol 42
Methocarbamol
42 claims
| Drug | Claims |
|---|---|
| Gabapentin | 230 |
| Baclofen | 144 |
| Morphine Sulfate Er Morphine Sulfate | 65 |
| Tramadol Hcl | 57 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 55 |
| Oxycodone Hcl | 55 |
| Meloxicam | 43 |
| Methocarbamol | 42 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 41 |
| Morphine Sulfate | 37 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Pain Medicine Physician Overview
How Christopher D Ambrosia, M.D. fits within the Pain Medicine Physician landscape nationally.
1,006
Pain Medicine Physician Providers in US
49
States with Pain Medicine Physician
2,094
Avg Claims per Provider
Christopher D Ambrosia, M.D.'s 1,055 claims are below the specialty average of 2,094.
Nationwide Pain Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for D Ambrosia, both outside Colorado so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (75 here).
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Pain Medicine Physician Providers in Colorado
Other clinicians with the same primary specialty enrolled in Colorado, drawn from the same CMS NPPES roster as D Ambrosia.
One of 13 Pain Medicine Physician providers enrolled in Colorado, 5 are shown here.
Dr. John Bissell
M.D.
Colorado Springs, CO
Dr. Orrie Clemens
MD
Fort Collins, CO
Dr. Cody Estler
M.D.
Colorado Springs, CO
Dr. Joseph Fillmore
MD
Greenwood Village, CO
Dr. Matthew Gray
M.D.
Northglenn, CO
Compare Pain Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Christopher D Ambrosia, M.D.'s specialty? ▼
Christopher D Ambrosia, M.D. specializes in Pain Medicine Physician and practices in Denver, Colorado. Credentials: M.D..
How much does Christopher D Ambrosia, M.D. prescribe under Medicare Part D? ▼
In 2024, Christopher D Ambrosia, M.D. wrote 1,055 Medicare Part D claims totaling $44K in drug costs for 254 beneficiaries.
What is Christopher D Ambrosia, M.D.'s Medicare quality score? ▼
Christopher D Ambrosia, M.D. has a CMS MIPS Final Score of 75/100. CMS published no Quality, Promoting Interoperability, Improvement Activity or Cost score for this clinician, so the final score is the neutral performance threshold CMS assigns rather than a measured result. The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Christopher D Ambrosia, M.D. located? ▼
Christopher D Ambrosia, M.D. is located at 8101 E LOWRY BLVD, Denver, CO, 80230. Phone: (303) 344-9090.
What is Christopher D Ambrosia, M.D.'s NPI number? ▼
Christopher D Ambrosia, M.D.'s National Provider Identifier (NPI) is 1881702629, issued on 08/29/2006.
Does Christopher D Ambrosia, M.D. prescribe more brand-name or generic drugs? ▼
Christopher D Ambrosia, M.D.'s prescribing is 4% brand-name and 96% generic drugs by claim count, with $6K in brand drug costs.
Does Christopher D Ambrosia, M.D. prescribe opioids? ▼
Yes, Christopher D Ambrosia, M.D. had 357 opioid claims in 2024 with an opioid prescribing rate of 33.8%.
How many Pain Medicine Physician providers are there in the US? ▼
There are 1,006 Pain Medicine Physician providers across 49 states in the US. The average Pain Medicine Physician provider writes 2,094 Medicare Part D claims per year.
What drugs does Christopher D Ambrosia, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Christopher D Ambrosia, M.D.'s most frequently prescribed drugs include Gabapentin, Baclofen, Morphine Sulfate Er. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Christopher D Ambrosia, M.D. accept Medicare? ▼
Christopher D Ambrosia, M.D. appears in CMS Medicare data with 1,055 Part D claims and 254 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Christopher D Ambrosia, M.D.'s credentials? ▼
Christopher D Ambrosia, M.D.'s NPI is 1881702629 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 (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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.