2026 NPPES data Obstetrics & Gynecology Physician NPI 1396759742 M.D.
Verify on CMS →

Katherine Gillogley, M.D.

Obstetrics & Gynecology Physician in Sacramento, 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 44,313 in Obstetrics & Gynecology 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
546
Medicare Part D claims · 168 beneficiaries · Obstetrics & Gynecology Physician avg: 179
MIPS score
96.5/100
▲ 13 pts above national avg 83.1 · Exceptional
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Katherine Gillogley, M.D. reported a CMS MIPS final score of 96.5/100 - above the 83.1 national average - and filed 546 Medicare Part D claims in 2023.

96.5/100
MIPS score · +13 vs avg
546
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.

Katherine Gillogley, 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

97 Top 17% higher than 83% 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%). Below this entry. 80–90: 129,887 scored providers (27%). Below this entry. 90+: 189,403 scored providers (40%). This entry sits in this band. 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 Katherine Gillogley, M.D. sits

This provider among obstetrics & gynecology physician peers

Across the 7,413 obstetrics & gynecology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Katherine Gillogley, M.D. writes more Part D claims than 93% of them and scores higher on MIPS quality than 85% - placing this provider in the high-volume, high-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 quality02550751000255075100Part D claim volume, percentile in specialtyMIPS quality, percentilePart D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 43Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 23Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 38Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 13Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 47Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 58Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 77Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 0Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 20Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 75Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 23Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 85Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 23Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 5Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 70Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 92Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 82Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 37Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 22Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 28Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 68Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 92Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 97Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 10Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 48Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 60Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 0Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 50Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 72Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 97Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 53Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 45Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 57Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 35Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 40Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 18Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 78Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 82Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 73Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 30Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 80Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 40Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 30Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 62Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 95Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 52Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 10Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 33Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 67Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 15Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 97Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 8Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 55Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 63Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 90Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 17Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 3Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 88Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 65Katherine Gillogley, M.D.-Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 85
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one obstetrics & gynecology physician peer from a representative sample of 60; the gold marker is Katherine Gillogley, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

Board certification likely (heuristic, not verified)

Katherine Gillogley, 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 Katherine Gillogley, M.D.?

High performer (top quartile)

NPI registry status

Active

Issued 07/28/2006

NPI 1396759742

Primary specialty

Obstetrics & Gynecology Physician

Mid-sized

44,313 US NPIs in this specialty

Medicare Part D claims

546 205% vs specialty avg

2023 prescription claims

Specialty avg: 179

MIPS final score

96.5/100 13.4 pts vs avg

Exceptional band

vs 83.1 national avg

Specialty distribution in California

How Obstetrics & Gynecology Physician compares to other specialties among California providers

California 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%Obstetrics & Gynecology Physician - 0.5%Obstetrics & Gynecology Physician0.5%
Largest specialties in California (% of in-state providers)

Medicare quality performance, MIPS

Katherine Gillogley, M.D.'s 2023 MIPS final score plotted against the Obstetrics & Gynecology Physician national average

High performer (top quartile)
MIPS Final Score
96.5/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Obstetrics & Gynecology Physician) - 96.5/100 vs national avg 83.1

0%100%National avg83%96.5%
MIPS final score (Obstetrics & Gynecology Physician) - 96.5/100 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).

Katherine Gillogley, M.D. appears in the CMS NPPES registry as a Obstetrics & Gynecology Physician provider holding M.D. credentials at 8120 TIMBERLAKE WAY, Sacramento, CA, 95823, with a listed phone of (916) 681-6000. NPI 1396759742 was issued on 07/28/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Gillogley 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 546 prescription claims written by this provider, covering 168 Medicare beneficiaries and totaling roughly $56K in drug spend. 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 96.5/100 for the 2023 performance year (Quality 80.3), compared with the national average of 83.1.

Obstetrics & Gynecology Physician is a mid-sized specialty nationwide, with 44,313 enrolled providers across 56 states and an average of 179 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

8120 TIMBERLAKE WAY
Sacramento, CA 95823

Provider Details

NPI 1396759742
Specialty Obstetrics & Gynecology Physician
Credentials M.D.
Gender Female
NPI Issued 07/28/2006

CMS Quality Score (MIPS)

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

96.5085
Final Score
Avg: 83.1
80.342
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

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 Katherine Gillogley, M.D.. To verify Katherine Gillogley, 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.

546
Total Claims
$56K
Total Drug Cost
168
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
943
Total Day Supply
25,571
Generic Drug Cost
$23K
Antibiotic Claims
36

Patient Demographics

Average Patient Age
71.7 years
Avg HCC Risk Score
0.87
Gender Split
100% female / 0% male
Age Distribution
<65: 16, 65-74: 92, 75-84: 48, 85+: 12

Top Prescribed Drugs (Medicare Part D)

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

What Katherine Gillogley, 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
Estradiol
112
Triamcinolone Acetonide
43
Clobetasol Propionate
36
Myrbetriq
Mirabegron
28
Valacyclovir
Valacyclovir Hcl
28
Nystatin
21
Estradiol (Once Weekly)
Estradiol
16
Metronidazole
15
Terconazole
15
Nitrofurantoin Mono-Macro
Nitrofurantoin Monohyd/M-Cryst
14

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

Obstetrics & Gynecology Physician Overview

How Katherine Gillogley, M.D. fits within the Obstetrics & Gynecology Physician landscape nationally.

44,313
Obstetrics & Gynecology Physician Providers in US
56
States with Obstetrics & Gynecology Physician
179
Avg Claims per Provider

Katherine Gillogley, M.D.'s 546 claims are above the specialty average of 179.

Nearby Obstetrics & Gynecology Physician Providers in California

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

Compare Obstetrics & Gynecology 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 Obstetrics & Gynecology 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 Katherine Gillogley, M.D.'s specialty?
Katherine Gillogley, M.D. specializes in Obstetrics & Gynecology Physician and practices in Sacramento, California. Credentials: M.D..
How much does Katherine Gillogley, M.D. prescribe under Medicare Part D?
In 2023, Katherine Gillogley, M.D. wrote 546 Medicare Part D claims totaling $56K in drug costs for 168 beneficiaries.
What is Katherine Gillogley, M.D.'s Medicare quality score?
Katherine Gillogley, M.D. has a CMS MIPS Final Score of 96.5/100 (Quality: 80.3). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Katherine Gillogley, M.D. located?
Katherine Gillogley, M.D. is located at 8120 TIMBERLAKE WAY, Sacramento, CA, 95823. Phone: (916) 681-6000.
What is Katherine Gillogley, M.D.'s NPI number?
Katherine Gillogley, M.D.'s National Provider Identifier (NPI) is 1396759742, issued on 07/28/2006.
How many Obstetrics & Gynecology Physician providers are there in the US?
There are 44,313 Obstetrics & Gynecology Physician providers across 56 states in the US. The average Obstetrics & Gynecology Physician provider writes 179 Medicare Part D claims per year.
What drugs does Katherine Gillogley, M.D. prescribe most often?
Based on 2023 Medicare Part D data, Katherine Gillogley, M.D.'s most frequently prescribed drugs include Estradiol, Triamcinolone Acetonide, Clobetasol Propionate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Katherine Gillogley, M.D. accept Medicare?
Katherine Gillogley, M.D. appears in CMS Medicare data with 546 Part D claims and 168 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Katherine Gillogley, M.D.'s credentials?
Katherine Gillogley, M.D.'s NPI is 1396759742 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.