DR. DARBY ANNETTE CLAYSON MD
NPI 1619968021
Internal Medicine in San Francisco, CA

Q: What is Darby Clayson's NPI number?

The NPI number for Darby Clayson is 1619968021. It was assigned to this individual provider in the NPPES registry on November 3, 2005.

Q: What is Darby Clayson's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Darby Clayson was last updated on February 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since November 03, 2005PECOS Enrolled

72.02/100

CMS Quality Rating

1575 7TH AVE, SAN FRANCISCO, CA 94122(702) 453-3799(702) 453-5741 Get Directions Write a Review

NPPES record last updated: February 27, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Dec 4, 2019, Aug 30, 2017, Jan 12, 2016 (3 updates tracked since 2016).

On this page

About Dr. Darby Annette Clayson Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. DARBY ANNETTE CLAYSON MD (NPI 1619968021) is an individual internal medicine provider in San Francisco, California, licensed in California (A139455) and active in the NPI registry since November 2005. She is enrolled in Medicare PECOS and is a graduate of Baylor College Of Medicine (1998).

NPPES Registry Identity

NPI1619968021

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameDR. DARBY ANNETTE CLAYSONCredential: MD

Location Address1575 7TH AVESan Francisco, CA 94122-3704

Mailing AddressPo Box 31085San Francisco, CA 94131-0085 · (702) 453-3799 · Fax (702) 453-5741

Phone(702) 453-3799

Fax(702) 453-5741

Sole ProprietorYes

Medical School CMSBaylor College Of MedicineGraduated 1998

Enumeration DateNovember 3, 2005

Last NPPES UpdateFebruary 27, 20263 updates tracked since enumeration

NPPES CertifiedFebruary 27, 2026

✔ NPI 1619968021 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

Licenses✔ Licensed in CA · A139455✔ Licensed in NV · 11502

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Also ListedMilitary Health Care ProviderTaxonomy 171000000X · License 11502 (NV)

1575 7TH AVE, San Francisco, CA 94122

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Darby Annette Clayson Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID42221368

PECOS Enrollment IDI20160323000586

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 12

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 99309

A follow-up nursing facility visit per day is a daily check-in by a healthcare professional. This 25-minute visit typically involves monitoring your health progress, addressing any concerns, and adjusting treatment plans as necessary. It's a vital part of ensuring your ongoing wellbeing.

585 services186 patients

Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more 99308

A follow-up nursing facility visit per day is a daily check-up service provided by healthcare professionals. It lasts around 15 minutes and involves assessing your health status, monitoring your recovery progress, and addressing any concerns you may have about your health or treatment.

412 services146 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

221 services123 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

143 services65 patients

Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes 99305

An initial nursing facility visit per day is a service where a healthcare professional spends about 35 minutes assessing a patient's health status. This includes reviewing medical history, conducting a physical exam, and developing a care plan based on the patient's needs.

123 services111 patients

Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes 99310

A follow-up nursing facility visit is a routine check-up that typically lasts about 35 minutes. During this visit, your health status is evaluated, any changes in your condition are noted, and necessary adjustments to your care plan are made. It's an essential part of maintaining your health.

103 services62 patients

Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more 99306

An initial nursing facility visit is your first meeting with your healthcare team at a nursing facility. Lasting typically 45 minutes, this appointment involves a comprehensive health assessment and the creation of your personalized care plan. It's a crucial step to ensure your health and well-being.

100 services94 patients

Nursing facility discharge day management, 30 minutes or less 99315

Nursing facility discharge day management involves organizing your transition from the nursing facility to your home or another facility. This service, taking 30 minutes or less, includes finalizing medical instructions, arranging follow-up care, and answering any questions.

77 services75 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

66 services65 patients

Hospital discharge day management, more than 30 minutes 99239

Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.

44 services43 patients

Nursing facility discharge management, more than 30 minutes 99316

Nursing facility discharge management over 30 minutes is a comprehensive process where a healthcare team prepares you for leaving the facility. It involves creating a tailored plan, coordinating care, and ensuring a smooth transition to your next care setting.

44 services43 patients

Initial nursing facility care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99304

An initial nursing facility visit is a daily check-up to monitor your health status. This service, lasting typically 25 minutes, involves a nurse assessing your overall wellbeing, discussing concerns, and updating your care plan as needed.

12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94122 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$153.83 typical visit price

range $69.00 – $202.35

Typical copayment $38.45 (range $17.25 – $50.58)

Most-billed visit code 99204

Established Patient

$119.48 typical visit price

range $23.44 – $166.46

Typical copayment $29.87 (range $5.86 – $41.61)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

72.02/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

61.76

Improvement Activities

Cost

46.72

Referred Medical Equipment & Supplies CMS DME claims 12

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Walker, folding, wheeled, adjustable or fixed height E0143

DME-Other DME · category DE000N

1 supplier15 claims15 services$41.97 avg. paid by Medicare

Commode chair, mobile or stationary, with fixed arms E0163

DME-Other DME · category DE000N

1 supplier15 claims15 services$46.97 avg. paid by Medicare

Hospital bed, semi-electric (head and foot adjustment), with any type side rails, with mattress E0260

DME-Hospital Beds · category DB000N

3 suppliers13 claims13 services$40.53 avg. paid by Medicare

Mattress, foam rubber E0272

DME-Hospital Beds · category DB000N

1 supplier18 claims18 services$108.84 avg. paid by Medicare

Hospital bed, semi-electric (head and foot adjustment), without side rails, without mattress E0295

DME-Hospital Beds · category DB000N

1 supplier79 claims88 services$50.15 avg. paid by Medicare

Bed side rails, half length E0305

DME-Hospital Beds · category DB000N

1 supplier79 claims175 services$7.28 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 17

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

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