DR. ALEXANDER ADU CLERK M.D.
NPI 1902911381
Sleep Specialist, PhD in San Jose, CA

Active since August 19, 2006PECOS Enrolled
455 OCONNOR DR STE 110, SAN JOSE, CA 95128(408) 295-4532(408) 295-4738 Get Directions Write a Review

NPPES record last updated: January 19, 2021. Verified against the NPPES registry weekly; last sync: October 04, 2026.

About Dr. Alexander Adu Clerk M.d. NPPES

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

DR. ALEXANDER ADU CLERK M.D. (NPI 1902911381) is an individual sleep specialist, phd provider in San Jose, California, licensed in California (448) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS and is a graduate of Loma Linda University School Of Medicine (1975).

NPPES Registry Identity

NPI1902911381
Entity TypeIndividualMale
Primary Taxonomy173F00000X
Provider Legal NameDR. ALEXANDER ADU CLERKCredential: M.D.
Location Address455 OCONNOR DR STE 110San Jose, CA 95128-1637
Mailing Address455 Oconnor Dr Ste 110San Jose, CA 95128-1637 · (408) 295-4532 · Fax (408) 295-4738
Fax(408) 295-4738
Sole ProprietorYes
Medical School CMSLoma Linda University School Of MedicineGraduated 1975
Enumeration DateAugust 19, 2006
Last NPPES UpdateJanuary 19, 2021
NPPES CertifiedJanuary 19, 2021
✔ NPI 1902911381 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySleep Specialist, PhDOther Service Providers
Taxonomy Code173F00000X
License✔ Licensed in CA · 448
Definition
Sleep medicine is a clinical specialty with a focus on clinical problems that require accurate diagnosis and treatment. The knowledge base of sleep medicine is derived from many disciplines including neuroanatomy, neurophysiology, respiratory physiology, pharmacology, psychology, psychiatry, neurology, general internal medicine, pulmonary medicine, and pediatrics as well as others.
Also ListedPsychiatry & Neurology · PsychiatryTaxonomy 2084P0800X · License A36573 (CA)
455 OCONNOR DR STE 110, San Jose, CA 95128

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. Alexander Adu Clerk M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID7911167515
PECOS Enrollment IDI20120319000602
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 6

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
198 services129 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.
52 services19 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
37 services37 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.
34 services34 patients
Sleep study in sleep lab (6 years or older) 95810
A sleep study in a sleep lab is a non-invasive overnight test that monitors your body while you sleep. It helps doctors understand your sleep patterns and identify any issues like sleep apnea or insomnia. You'll be connected to equipment that tracks your heart rate, brain waves, breathing, and movements.
28 services27 patients
Sleep study in sleep lab with continuous airway pressure (6 years or older) 95811
A sleep study in a sleep lab with continuous airway pressure is a test for individuals aged 6 and above. It monitors your sleep patterns to check for disorders like sleep apnea. Continuous airway pressure helps keep your airways open while you sleep, improving your breathing.
18 services18 patients

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.

Reported Quality Measures

e-Prescribing
At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.
62%167 patients3/55-star benchmark: 100%
Medication Reconciliation
The MIPS eligible clinician performs medication reconciliation for at least one transition of care in which the patient is transitioned into the care of the MIPS eligible clinician.
70%23 patients3/55-star benchmark: 100%
Patient-Specific Education
The MIPS eligible clinician must use clinically relevant information from CEHRT to identify patient-specific educational resources and provide access to those materials to at least one unique patient seen by the MIPS eligible clinician.
90%182 patients4/55-star benchmark: 100%
Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan
Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…
100%181 patients5/55-star benchmark: 100%
Preventive Care and Screening: Screening for Depression and Follow-Up Plan
Percentage of patients aged 12 years and older screened for depression on the date of the encounter using an age appropriate standardized depression screening tool AND if positive, a follow-up plan is documented on the date of the positive screen
100%180 patients5/55-star benchmark: 100%
Provide Patient Access
At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold…
96%191 patients4/55-star benchmark: 100%
Secure Messaging
For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of CEHRT to the patient (or the patient-authorized representative), or in response to a secure…
13%182 patients1/55-star benchmark: 79%
Sleep Apnea: Assessment of Adherence to Positive Airway Pressure Therapy
Percentage of visits for patients aged 18 years and older with a diagnosis of obstructive sleep apnea who were prescribed positive airway pressure therapy who had documentation that adherence to positive airway pressure therapy was objectively measured
100%127 patients5/55-star benchmark: 100%
Sleep Apnea: Assessment of Sleep Symptoms
Percentage of visits for patients aged 18 years and older with a diagnosis of obstructive sleep apnea that includes documentation of an assessment of sleep symptoms, including presence or absence of snoring and daytime sleepiness
99%155 patients4/55-star benchmark: 100%
Sleep Apnea: Positive Airway Pressure Therapy Prescribed
Percentage of patients aged 18 years and older with a diagnosis of moderate or severe obstructive sleep apnea who were prescribed positive airway pressure therapy
100%138 patients
Sleep Apnea: Severity Assessment at Initial Diagnosis
Percentage of patients aged 18 years and older with a diagnosis of obstructive sleep apnea who had an apnea hypopnea index (AHI) or a respiratory disturbance index (RDI) measured at the time of initial diagnosis
99%152 patients4/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 16

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

Tubing with integrated heating element for use with positive airway pressure device A4604
DME-Other DME · category DE001N
26 suppliers363 claims363 services$31.87 avg. paid by Medicare
Full face mask used with positive airway pressure device, each A7030
DME-Other DME · category DE001N
19 suppliers112 claims112 services$67.99 avg. paid by Medicare
Face mask interface, replacement for full face mask, each A7031
DME-Other DME · category DE001N
18 suppliers115 claims285 services$26.88 avg. paid by Medicare
Cushion for use on nasal mask interface, replacement only, each A7032
DME-Other DME · category DE001N
21 suppliers164 claims927 services$14.81 avg. paid by Medicare
Pillow for use on nasal cannula type interface, replacement only, pair A7033
DME-Other DME · category DE001N
15 suppliers146 claims801 services$12.65 avg. paid by Medicare
Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034
DME-Other DME · category DE001N
26 suppliers319 claims319 services$42.68 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Alexander Clerk's NPI number?

The NPI number for Alexander Clerk is 1902911381. It was assigned to this individual provider in the NPPES registry on August 19, 2006.

Where is Alexander Clerk located?

Alexander Clerk practices at 455 Oconnor Dr Ste 110, San Jose, CA 95128. The listed phone number is (408) 295-4532.

What is Alexander Clerk's specialty?

The primary specialty registered for this NPI is Sleep Specialist, PhD with taxonomy code 173F00000X.

Is Alexander Clerk enrolled in Medicare?

Yes. Alexander Clerk is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Alexander Clerk was last updated on January 19, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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.