2026 NPPES data Orthopaedic Foot and Ankle Surgery Physician NPI 1083657654 M.D.
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Mark Schakel, M.D.

Orthopaedic Foot and Ankle Surgery Physician in Santa Rosa, 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 678 in Orthopaedic Foot and Ankle Surgery 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
434
Medicare Part D claims · 113 beneficiaries · Orthopaedic Foot and Ankle Surgery Physician avg: 218
MIPS score
77.9/100
▼ 5 pts below national avg 83.1 · Above neutral
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Mark Schakel, M.D. reported a CMS MIPS final score of 77.9/100 — below the 83.1 national average — and filed 434 Medicare Part D claims in 2023.

77.9/100
MIPS score · -5 vs avg
434
Part D claims, 2023
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.

Mark Schakel, 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

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). This entry sits in this band. 80–90: 129,887 scored providers (27%). Above this entry. 90–100: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

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 Mark Schakel, M.D. sits

This provider among orthopaedic foot and ankle surgery physician peers

Across the 287 orthopaedic foot and ankle surgery physician providers who report both Medicare Part D prescribing and a MIPS quality score, Mark Schakel, M.D. writes more Part D claims than 82% of them and scores higher on MIPS quality than 42% — placing this provider in the high-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

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality0255075100023.647.370.994.5Part D claim volume — percentile in specialtyMIPS quality — percentilePart D claim volume — percentile in specialty: 23 · MIPS quality — percentile: 67Part D claim volume — percentile in specialty: 45 · MIPS quality — percentile: 72Part D claim volume — percentile in specialty: 37 · MIPS quality — percentile: 48Part D claim volume — percentile in specialty: 27 · MIPS quality — percentile: 90Part D claim volume — percentile in specialty: 50 · MIPS quality — percentile: 57Part D claim volume — percentile in specialty: 90 · MIPS quality — percentile: 3Part D claim volume — percentile in specialty: 57 · MIPS quality — percentile: 55Part D claim volume — percentile in specialty: 63 · MIPS quality — percentile: 42Part D claim volume — percentile in specialty: 65 · MIPS quality — percentile: 50Part D claim volume — percentile in specialty: 70 · MIPS quality — percentile: 90Part D claim volume — percentile in specialty: 48 · MIPS quality — percentile: 63Part D claim volume — percentile in specialty: 92 · MIPS quality — percentile: 12Part D claim volume — percentile in specialty: 10 · MIPS quality — percentile: 82Part D claim volume — percentile in specialty: 40 · MIPS quality — percentile: 13Part D claim volume — percentile in specialty: 12 · MIPS quality — percentile: 87Part D claim volume — percentile in specialty: 2 · MIPS quality — percentile: 23Part D claim volume — percentile in specialty: 33 · MIPS quality — percentile: 90Part D claim volume — percentile in specialty: 77 · MIPS quality — percentile: 90Part D claim volume — percentile in specialty: 97 · MIPS quality — percentile: 23Part D claim volume — percentile in specialty: 15 · MIPS quality — percentile: 75Part D claim volume — percentile in specialty: 60 · MIPS quality — percentile: 15Part D claim volume — percentile in specialty: 17 · MIPS quality — percentile: 20Part D claim volume — percentile in specialty: 73 · MIPS quality — percentile: 7Part D claim volume — percentile in specialty: 0 · MIPS quality — percentile: 38Part D claim volume — percentile in specialty: 62 · MIPS quality — percentile: 90Part D claim volume — percentile in specialty: 17 · MIPS quality — percentile: 45Part D claim volume — percentile in specialty: 3 · MIPS quality — percentile: 15Part D claim volume — percentile in specialty: 93 · MIPS quality — percentile: 77Part D claim volume — percentile in specialty: 95 · MIPS quality — percentile: 23Part D claim volume — percentile in specialty: 87 · MIPS quality — percentile: 2Part D claim volume — percentile in specialty: 7 · MIPS quality — percentile: 53Part D claim volume — percentile in specialty: 88 · MIPS quality — percentile: 23Part D claim volume — percentile in specialty: 28 · MIPS quality — percentile: 43Part D claim volume — percentile in specialty: 67 · MIPS quality — percentile: 23Part D claim volume — percentile in specialty: 82 · MIPS quality — percentile: 60Part D claim volume — percentile in specialty: 22 · MIPS quality — percentile: 38Part D claim volume — percentile in specialty: 78 · MIPS quality — percentile: 47Part D claim volume — percentile in specialty: 13 · MIPS quality — percentile: 58Part D claim volume — percentile in specialty: 68 · MIPS quality — percentile: 85Part D claim volume — percentile in specialty: 42 · MIPS quality — percentile: 18Part D claim volume — percentile in specialty: 8 · MIPS quality — percentile: 5Part D claim volume — percentile in specialty: 30 · MIPS quality — percentile: 35Part D claim volume — percentile in specialty: 52 · MIPS quality — percentile: 88Part D claim volume — percentile in specialty: 20 · MIPS quality — percentile: 90Part D claim volume — percentile in specialty: 35 · MIPS quality — percentile: 23Part D claim volume — percentile in specialty: 55 · MIPS quality — percentile: 73Part D claim volume — percentile in specialty: 85 · MIPS quality — percentile: 80Part D claim volume — percentile in specialty: 53 · MIPS quality — percentile: 62Part D claim volume — percentile in specialty: 80 · MIPS quality — percentile: 65Part D claim volume — percentile in specialty: 43 · MIPS quality — percentile: 7Part D claim volume — percentile in specialty: 32 · MIPS quality — percentile: 0Part D claim volume — percentile in specialty: 100 · MIPS quality — percentile: 78Part D claim volume — percentile in specialty: 75 · MIPS quality — percentile: 67Part D claim volume — percentile in specialty: 72 · MIPS quality — percentile: 90Part D claim volume — percentile in specialty: 47 · MIPS quality — percentile: 10Part D claim volume — percentile in specialty: 38 · MIPS quality — percentile: 70Part D claim volume — percentile in specialty: 58 · MIPS quality — percentile: 22Part D claim volume — percentile in specialty: 25 · MIPS quality — percentile: 82Part D claim volume — percentile in specialty: 98 · MIPS quality — percentile: 33Part D claim volume — percentile in specialty: 3 · MIPS quality — percentile: 52Mark Schakel, M.D. — Part D claim volume — percentile in specialty: 82 · MIPS quality — percentile: 42
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one orthopaedic foot and ankle surgery physician peer from a representative sample of 60; the gold marker is Mark Schakel, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

Board certification likely (heuristic — not verified)

Mark Schakel, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting — 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 Mark Schakel, M.D.?

Below national average

NPI registry status

Active

Issued 06/13/2006

NPI 1083657654

Primary specialty

Orthopaedic Foot and Ankle Surgery Physician

Niche

678 US NPIs in this specialty

Medicare Part D claims

434 99% vs specialty avg

2023 prescription claims

Specialty avg: 218

MIPS final score

77.9/100 5.2 pts vs avg

Above neutral band

vs 83.1 national avg

Specialty distribution in California

How Orthopaedic Foot and Ankle Surgery Physician compares to other specialties among California providers

California providers

Largest specialties in California (% of in-state providers)

Behavior Technician — 17.3%Behavior Technician17.3%Marriage & Family Therapist — 5.5%Marriage & Family Therapist5.5%Student in an Organized Health Care Education/Training Program — 5%Student in an Organized Health Care Education/Training Program5%Mental Health Counselor — 3.9%Mental Health Counselor3.9%Pharmacist — 3.5%Pharmacist3.5%Clinical Social Worker — 3.1%Clinical Social Worker3.1%Orthopaedic Foot and Ankle Surgery Physician — 0%Orthopaedic Foot and Ankle Surgery Physician0%
Largest specialties in California (% of in-state providers)

Medicare quality performance — MIPS

Mark Schakel, M.D.'s 2023 MIPS final score plotted against the Orthopaedic Foot and Ankle Surgery Physician national average

Below national average
MIPS Final Score
77.9/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Orthopaedic Foot and Ankle Surgery Physician) — 77.9/100 vs national avg 83.1

0%100%National avg83%77.9%
MIPS final score (Orthopaedic Foot and Ankle Surgery Physician) — 77.9/100 vs national avg 83.1

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).

Mark Schakel, M.D. appears in the CMS NPPES registry as a Orthopaedic Foot and Ankle Surgery Physician provider holding M.D. credentials at 1405 MONTGOMERY DR, Santa Rosa, CA, 95405, with a listed phone of (707) 546-1922. NPI 1083657654 was issued on 06/13/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Schakel most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 434 prescription claims written by this provider, covering 113 Medicare beneficiaries and totaling roughly $7K in drug spend, with an opioid prescribing rate of 47.9%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 77.9/100 for the 2023 performance year (Quality 60.3, Cost 65.9), compared with the national average of 83.1.

Orthopaedic Foot and Ankle Surgery Physician is a narrow specialty nationwide, with 678 enrolled providers across 51 states and an average of 218 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

1405 MONTGOMERY DR
Santa Rosa, CA 95405

Provider Details

NPI 1083657654
Specialty Orthopaedic Foot and Ankle Surgery Physician
Credentials M.D.
Gender Male
NPI Issued 06/13/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

77.8555
Final Score
Avg: 83.1
60.3253
Quality
65.8598
Cost
100
Promoting Interoperability

Reporting: Group practice

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 Mark Schakel, M.D.. To verify Mark Schakel, M.D.'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.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

434
Total Claims
$7K
Total Drug Cost
113
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
440
Total Day Supply
6,844
Brand Drug Cost
$0
Generic Drug Cost
$7K
Opioid Claims
208 (47.9% rate)
Antibiotic Claims
139

Patient Demographics

Average Patient Age
71.0 years
Avg HCC Risk Score
0.94
Gender Split
63% female / 37% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What Mark Schakel, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
115
Cephalexin
93
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
84
Gabapentin
25
Sulfamethoxazole-Trimethoprim
Sulfamethoxazole/Trimethoprim
23
Clindamycin Hcl
14
Celecoxib
11
Ibuprofen
11

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Orthopaedic Foot and Ankle Surgery Physician Overview

How Mark Schakel, M.D. fits within the Orthopaedic Foot and Ankle Surgery Physician landscape nationally.

678
Orthopaedic Foot and Ankle Surgery Physician Providers in US
51
States with Orthopaedic Foot and Ankle Surgery Physician
218
Avg Claims per Provider

Mark Schakel, M.D.'s 434 claims are above the specialty average of 218.

Nearby Orthopaedic Foot and Ankle Surgery Physician Providers in California

Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Schakel.

Compare Orthopaedic Foot and Ankle Surgery 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 Orthopaedic Foot and Ankle Surgery 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.

Frequently Asked Questions

What is Mark Schakel, M.D.'s specialty?
Mark Schakel, M.D. specializes in Orthopaedic Foot and Ankle Surgery Physician and practices in Santa Rosa, California. Credentials: M.D..
How much does Mark Schakel, M.D. prescribe under Medicare Part D?
In 2023, Mark Schakel, M.D. wrote 434 Medicare Part D claims totaling $7K in drug costs for 113 beneficiaries.
What is Mark Schakel, M.D.'s Medicare quality score?
Mark Schakel, M.D. has a CMS MIPS Final Score of 77.9/100 (Quality: 60.3, Cost: 65.9). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Mark Schakel, M.D. located?
Mark Schakel, M.D. is located at 1405 MONTGOMERY DR, Santa Rosa, CA, 95405. Phone: (707) 546-1922.
What is Mark Schakel, M.D.'s NPI number?
Mark Schakel, M.D.'s National Provider Identifier (NPI) is 1083657654, issued on 06/13/2006.
Does Mark Schakel, M.D. prescribe opioids?
Yes, Mark Schakel, M.D. had 208 opioid claims in 2023 with an opioid prescribing rate of 47.9%.
How many Orthopaedic Foot and Ankle Surgery Physician providers are there in the US?
There are 678 Orthopaedic Foot and Ankle Surgery Physician providers across 51 states in the US. The average Orthopaedic Foot and Ankle Surgery Physician provider writes 218 Medicare Part D claims per year.
What drugs does Mark Schakel, M.D. prescribe most often?
Based on 2023 Medicare Part D data, Mark Schakel, M.D.'s most frequently prescribed drugs include Hydrocodone-Acetaminophen, Cephalexin, Oxycodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mark Schakel, M.D. accept Medicare?
Mark Schakel, M.D. appears in CMS Medicare data with 434 Part D claims and 113 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mark Schakel, M.D.'s credentials?
Mark Schakel, M.D.'s NPI is 1083657654 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

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.