NPI registry status
Active
2026 NPPES data Hospitalist Physician NPI 1831585462 M.D.
Verify on CMS → Spencer Schilling, M.D.
Hospitalist Physician in Sioux Falls, South Dakota.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 16,825 in Hospitalist 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
200
Medicare Part D claims · 80 beneficiaries · Hospitalist Physician avg: 888
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
78/100
▼ 5 pts below national avg 83.1 · Above neutral
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
Spencer Schilling, M.D. reported a CMS MIPS final score of 78/100 - below the 83.1 national average - and filed 200 Medicare Part D claims in 2023.
- 78/100
- MIPS score · -5 vs avg
- 200
- Part D claims, 2023
- 88%
- 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.
Spencer Schilling, M.D.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
78 24th percentile higher than 24% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where Spencer Schilling, M.D. sits
This provider among hospitalist physician peers
Across the 4,437 hospitalist physician providers who report both Medicare Part D prescribing and a MIPS quality score, Spencer Schilling, M.D. writes more Part D claims than 41% of them and scores higher on MIPS quality than 20% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one hospitalist physician peer from a representative sample of 60; the gold marker is Spencer Schilling, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Spencer Schilling, 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 Spencer Schilling, M.D.?
Below national averagePrimary specialty
Hospitalist Physician
Medicare Part D claims
200 77% vs specialty avg
MIPS final score
78/100 5.1 pts vs avg
Specialty distribution in South Dakota
How Hospitalist Physician compares to other specialties among South Dakota providers
Medicare quality performance, MIPS
Spencer Schilling, M.D.'s 2023 MIPS final score plotted against the Hospitalist Physician national average
- MIPS Final Score
- 78/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Hospitalist Physician) - 78/100 vs national avg 83.1
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).
Spencer Schilling, M.D. appears in the CMS NPPES registry as a Hospitalist Physician provider holding M.D. credentials at 1305 W 18TH ST, Sioux Falls, SD, 57105, with a listed phone of (605) 328-4973. NPI 1831585462 was issued on 04/10/2015.
Medicare Part D records for calendar year 2023 show 200 prescription claims written by this provider, covering 80 Medicare beneficiaries and totaling roughly $13K in drug spend, split 12% brand-name and 88% generic by claim count, with an opioid prescribing rate of 7.5%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 78/100 for the 2023 performance year (Quality 80.1, Cost 47.4), compared with the national average of 83.1.
Hospitalist Physician is a mid-sized specialty nationwide, with 16,825 enrolled providers across 54 states and an average of 888 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 | 1831585462 |
|---|---|
| Specialty | Hospitalist Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 04/10/2015 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
77.9984
Final Score
Avg: 83.1
80.1358
Quality
47.3589
Cost
99
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Spencer Schilling, 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.
Sanford Clinic
Sioux Falls, SD
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Typical
Spencer Schilling, M.D. - brand share 12.0%
Hospitalist Physician average
12% brand-name claims vs 88% generic, on 200 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.
200
Total Claims
$13K
Total Drug Cost
80
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 220
- Total Day Supply
- 4,140
- Brand vs Generic
- 12% brand / 88% generic
- Brand Drug Cost
- $12K
- Generic Drug Cost
- $1K
- Opioid Claims
- 15 (7.5% rate)
- Antibiotic Claims
- 33
Patient Demographics
- Average Patient Age
- 72.1 years
- Avg HCC Risk Score
- 2.79
- Gender Split
- 60% female / 40% male
- Age Distribution
- <65: 17, 65-74: 31, 75-84: 21, 85+: 11
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Spencer Schilling, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Metformin Hcl
Metformin Hcl
19 claims
- Omeprazole
Omeprazole
19 claims
- Oxycodone Hcl
Oxycodone Hcl
14 claims
- Prednisone
Prednisone
13 claims
| Drug | Claims |
|---|---|
| Metformin Hcl | 19 |
| Omeprazole | 19 |
| Oxycodone Hcl | 14 |
| Prednisone | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Hospitalist Physician Overview
How Spencer Schilling, M.D. fits within the Hospitalist Physician landscape nationally.
16,825
Hospitalist Physician Providers in US
54
States with Hospitalist Physician
888
Avg Claims per Provider
Spencer Schilling, M.D.'s 200 claims are below the specialty average of 888.
Nearby Hospitalist Physician Providers in South Dakota
Other clinicians with the same primary specialty enrolled in South Dakota, drawn from the same CMS NPPES roster as Schilling.
Dr. Colleen Achong
MD
Sioux Falls, SD
Mamoon Ahmed
Sioux Falls, SD
Dr. Mishka Ahmed
MD
Sioux Falls, SD
Dr. Mohammad Ahmed
M.D
Sioux Falls, SD
Dr. Sameer Ahmed
MD
Sioux Falls, SD
Compare Hospitalist 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 South Dakota medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Hospitalist 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore South Dakota
Frequently Asked Questions
What is Spencer Schilling, M.D.'s specialty? ▼
Spencer Schilling, M.D. specializes in Hospitalist Physician and practices in Sioux Falls, South Dakota. Credentials: M.D..
How much does Spencer Schilling, M.D. prescribe under Medicare Part D? ▼
In 2023, Spencer Schilling, M.D. wrote 200 Medicare Part D claims totaling $13K in drug costs for 80 beneficiaries.
What is Spencer Schilling, M.D.'s Medicare quality score? ▼
Spencer Schilling, M.D. has a CMS MIPS Final Score of 78/100 (Quality: 80.1, Cost: 47.4). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Spencer Schilling, M.D. located? ▼
Spencer Schilling, M.D. is located at 1305 W 18TH ST, Sioux Falls, SD, 57105. Phone: (605) 328-4973.
What is Spencer Schilling, M.D.'s NPI number? ▼
Spencer Schilling, M.D.'s National Provider Identifier (NPI) is 1831585462, issued on 04/10/2015.
Does Spencer Schilling, M.D. prescribe more brand-name or generic drugs? ▼
Spencer Schilling, M.D.'s prescribing is 12% brand-name and 88% generic drugs by claim count, with $12K in brand drug costs.
Does Spencer Schilling, M.D. prescribe opioids? ▼
Yes, Spencer Schilling, M.D. had 15 opioid claims in 2023 with an opioid prescribing rate of 7.5%.
How many Hospitalist Physician providers are there in the US? ▼
There are 16,825 Hospitalist Physician providers across 54 states in the US. The average Hospitalist Physician provider writes 888 Medicare Part D claims per year.
What drugs does Spencer Schilling, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Spencer Schilling, M.D.'s most frequently prescribed drugs include Metformin Hcl, Omeprazole, Oxycodone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Spencer Schilling, M.D. accept Medicare? ▼
Spencer Schilling, M.D. appears in CMS Medicare data with 200 Part D claims and 80 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Spencer Schilling, M.D.'s credentials? ▼
Spencer Schilling, M.D.'s NPI is 1831585462 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 (2023). 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 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.