Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DOUGLAS B. MASSON M.D.
NPI 1114901238
Urology in Prescott, AZ

Q: What is Douglas Masson's NPI number?

The NPI number for Douglas Masson is 1114901238. It was assigned to this individual provider in the NPPES registry on December 1, 2005.

Q: What is Douglas Masson's specialty?

The primary specialty registered for this NPI is Urology with taxonomy code 208800000X.

Q: When was this NPI record last updated?

The NPPES record for Douglas Masson was last updated on September 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 34 days 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 December 01, 2005PECOS EnrolledAccepts Medicare Assignment

75/100

CMS Quality Rating

1001 WILLOW CREEK RD STE 3300, PRESCOTT, AZ 86301(928) 708-4000(928) 458-2118 Get Directions Write a Review

NPPES record last updated: September 21, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 21, 2026, Jun 23, 2025, Aug 9, 2024 and 3 more (6 updates tracked since 2016).

On this page

About Douglas B. Masson M.d. NPPES

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

DOUGLAS B. MASSON M.D. (NPI 1114901238) is an individual urology provider in Prescott, Arizona, licensed in Arizona (48429) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS, is affiliated with Harrison Medical Center, and maintains 5 additional practice locations.

NPPES Registry Identity

NPI1114901238

Entity TypeIndividualMale

Primary Taxonomy208800000X

Provider Legal NameDOUGLAS B. MASSONCredential: M.D.

Location Address1001 WILLOW CREEK RD STE 3300Prescott, AZ 86301-1614

Mailing AddressPo Box 10880Prescott, AZ 86304-0880 · (602) 406-4786 · Fax (916) 636-4358

Phone(928) 708-4000

Fax(928) 458-2118

Sole ProprietorNo

Medical School CMSUniversity Of Washington School Of MedicineGraduated 1991

Enumeration DateDecember 1, 2005

Last NPPES UpdateSeptember 21, 20266 updates tracked since enumeration

NPPES CertifiedSeptember 21, 2026

✔ NPI 1114901238 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyUrologyAllopathic & Osteopathic Physicians

Taxonomy Code208800000X

Licenses✔ Licensed in AZ · 48429✔ Licensed in WA · MD.MD.00034492

Definition

A urologist manages benign and malignant medical and surgical disorders of the genitourinary system and the adrenal gland. This specialist has comprehensive knowledge of and skills in endoscopic, percutaneous and open surgery of congenital and acquired conditions of the urinary and reproductive systems and their contiguous structures.

1001 WILLOW CREEK RD STE 3300, Prescott, AZ 86301

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Secondary Practice Locations 5

Location 11950 NW Myhre Rd Fl 2Silverdale, WA 98383-7662 · Phone (564) 240-4090 · Fax (564) 240-4114

Location 26525 W Sack DrGlendale, AZ 85308-7104 · Phone (602) 337-8500 · Fax (602) 337-8151

Location 36036 N 19th Ave Ste 204Phoenix, AZ 85015-2104 · Phone (480) 616-0356 · Fax (480) 616-0603

Location 46320 W Union Hills Dr Bldg BGlendale, AZ 85308-1096 · Phone (602) 942-5600 · Fax (623) 825-6386

Location 55133 N Central Ave Ste 100Phoenix, AZ 85012-1438 · Phone (480) 616-0356 · Fax (480) 616-0603

Other Identifiers 1

Medicaid160446AZ

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Blue Cross Blue Shield of Arizona, Cigna HealthCare of Arizona, Inc and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Douglas B. Masson M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2961664750

PECOS Enrollment IDI20120423000750, I20160721001265

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.

Medicare Billing Reassignments

Medicare enrollment records show Douglas Masson reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Honorhealth Ambulatory

9.0 mi

Cardiovascular Disease

3198 N WINDSONG DR
Prescott Valley, AZ 86314

Reassigned Medicare billing, Arizona enrollment
822 clinicians in this Medicare group

NPI 1093337719 (623) 683-7555

Northern Arizona Healthcare Corporation

65 mi

Family Medicine

1200 N. BEAVER STREET, ATTN: PAYER CREDENTIALING
Flagstaff, AZ 86001

Reassigned Medicare billing, Arizona enrollment
552 clinicians in this Medicare group

NPI 1669914552 (928) 773-2546

Freedom Health Interventional Centers LLC

74 mi

Multi-Specialty

6036 N 19TH AVE STE 204
Phoenix, AZ 85015

Reassigned Medicare billing, Arizona enrollment
13 clinicians in this Medicare group

NPI 1508364860 (480) 626-1746

Summit Healthcare Medical Associates

112 mi

Rural Health

2352 QUARTER HORSE TRAIL
Overgaard, AZ 85933

Reassigned Medicare billing, Arizona enrollment
99 clinicians in this Medicare group

NPI 1770700767 (928) 535-3616

Sierra Vista Regional Health Center Medical Group LLC

245 mi

Family Medicine

5750 E HIGHWAY 90, SUITE 200
Sierra Vista, AZ 85635

Reassigned Medicare billing, Arizona enrollment
128 clinicians in this Medicare group

NPI 1043575483 (520) 263-3979

Capital Medical Center Specialty Physicians, LLC

1,019 mi

Occupational Medicine

3900 CAPITOL MALL DR SW
Olympia, WA 98502

Reassigned Medicare billing, Washington enrollment
220 clinicians in this Medicare group

NPI 1760785281 (360) 956-1299

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 31

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.

498 services336 patients

Urinalysis, manual test 81002

A urinalysis is a simple, non-invasive test that checks the urine for various elements such as sugar, protein, and signs of infection. It can help detect many common conditions, including kidney disease and diabetes. The manual test involves a lab technician examining a urine sample.

354 services258 patients

Detection test by nucleic acid for organism, amplified probe technique 87798

A nucleic acid detection test is a procedure to identify specific organisms in your body. This test uses an amplified probe technique, which magnifies the genetic material of the organism, making it easier to detect. It's a precise way to diagnose infections.

160 services15 patients

Diagnostic exam of bladder and urethra using an endoscope 52000

This procedure involves using a thin, flexible tube with a light, called an endoscope, to examine the bladder and urethra. It helps in identifying any abnormalities or issues that may be causing discomfort or other symptoms.

82 services74 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.

69 services69 patients

Detection test by nucleic acid for multiple organisms, amplified probe(s) technique 87801

This is a test that identifies various microorganisms in your body using a method called amplified probe technique. It targets specific genetic material (nucleic acids) of the organisms, amplifying them for easy detection. This helps in diagnosing infections accurately.

60 services15 patients

Ultrasound scan of pelvic region through rectum 76872

An ultrasound scan of the pelvic region through the rectum is a medical procedure where a small, smooth device is gently inserted into the rectum. This device uses sound waves to create images of the internal structures in the lower abdomen, aiding in diagnosis and treatment planning.

38 services35 patients

Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional 99211

This service involves an outpatient visit for established patients who may not need direct interaction with a healthcare professional. It could include reviewing test results, monitoring existing conditions, or adjusting treatment plans. It's typically done remotely, ensuring your comfort and convenience.

35 services22 patients

Ultrasound measurement of bladder capacity after voiding 51798

Ultrasound measurement of bladder capacity after voiding is a non-invasive test that uses sound waves to create images of your bladder. It's done after you've emptied your bladder to see if there's any leftover urine, which can help diagnose certain conditions.

34 services27 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

32 services23 patients

Simple bladder irrigation and/or instillation 51700

Bladder irrigation and/or instillation is a process where a sterile solution is introduced into the bladder to cleanse it or deliver medication. This procedure helps manage certain bladder conditions, ensuring optimal bladder health.

23 services19 patients

Biopsy of prostate gland 55700

A biopsy of the prostate gland is a procedure where a small sample of tissue is taken from your body's internal gland, located near the bladder, for testing. This helps in diagnosing potential health issues. It's usually done with a fine needle and imaging technology for accuracy.

20 services20 patients

Detection test for candida species (yeast), amplified probe technique 87481

This test helps identify Candida, a type of fungus often present in the human body. An amplified probe technique is used, which enhances detection of the fungus in a sample. This method increases the accuracy of the test, helping to determine the best treatment.

20 services15 patients

Detection test by nucleic acid for chlamydia trachomatis, amplified probe technique 87491

A detection test by nucleic acid for chlamydia trachomatis, amplified probe technique, is a test that identifies the presence of a specific bacteria in the body. This bacteria can cause various health issues. The technique amplifies the sample to improve accuracy.

20 services15 patients

Detection test by nucleic acid for vancomycin resistance strep (vre), amplified probe technique 87500

The detection test by nucleic acid for vancomycin-resistant strep (VRE) is a laboratory procedure. It uses an amplified probe technique to identify specific genetic material in bacteria. This helps determine if the bacteria are resistant to the antibiotic vancomycin.

20 services15 patients

Detection of mycoplasma genitalium by dna or rna probe 87563

This procedure involves the use of special probes to identify the presence of a specific bacteria, Mycoplasma Genitalium, in your body. These probes detect the bacteria's unique DNA or RNA, helping to confirm if you have an infection.

20 services15 patients

Detection test by nucleic acid for neisseria gonorrhoeae (gonorrhoeae bacteria), amplified probe technique 87591

This is a lab test that checks for the presence of a specific bacteria called Neisseria gonorrhoeae in your body. It uses a technique called amplified probe, which makes many copies of the bacteria's genetic material (nucleic acid) to help detect it more easily.

20 services15 patients

Detection test by nucleic acid for staphylococcus aureus (bacteria), amplified probe technique 87640

A detection test for Staphylococcus aureus uses a method called the amplified probe technique. This method identifies the bacteria's unique genetic material, or nucleic acid, helping to confirm its presence. It's a highly accurate way to detect this type of bacteria.

20 services15 patients

Detection test by nucleic acid for staphylococcus aureus, methicillin resistant (mrsa bacteria), amplified probe technique 87641

A detection test by nucleic acid for MRSA bacteria uses an amplified probe technique. It's a lab procedure that identifies the presence of MRSA, a type of bacteria resistant to many antibiotics. This test helps in deciding the best treatment.

20 services15 patients

Detection test by nucleic acid for strep (streptococcus, group a), amplified probe technique 87651

This test detects Group A Streptococcus bacteria in your body. It uses an amplified probe technique, which amplifies the bacteria's nucleic acid, making it easier to identify. This test helps diagnose conditions like strep throat or scarlet fever.

20 services15 patients

Detection test by nucleic acid for strep (streptococcus, group b), amplified probe technique 87653

A detection test by nucleic acid for Group B Strep uses an amplified probe technique. This test identifies the presence of Group B Strep bacteria in the body. It involves collecting a sample, usually a swab, which is then examined in a lab for the bacteria's genetic material.

20 services15 patients

Detection test by nucleic acid for trichomonas vaginalis (genital parasite), amplified probe technique 87661

This is a test to identify a common microscopic organism that can cause discomfort. The technique involves using a special probe to amplify the organism's genetic material, making it easier to detect. It's a simple, safe, and accurate procedure.

20 services15 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

19 services19 patients

Injection, ceftriaxone sodium, per 250 mg J0696

Ceftriaxone sodium is an antibiotic injection used to treat a variety of bacterial infections. Each injection contains 250 mg of the medicine. It works by stopping the growth of bacteria in your body.

17 services17 patients

Injection, garamycin, gentamicin, up to 80 mg J1580

This procedure involves administering an injection of Gentamicin, also known as Garamycin, up to a dose of 80 mg. Gentamicin is an antibiotic used to treat a wide variety of bacterial infections. It works by stopping the growth of bacteria.

17 services17 patients

Complex measurement of pressure of urine flow in bladder with voiding pressure studies 51728

This procedure measures the pressure in your bladder as it fills and empties. It helps to understand how well your bladder is functioning. Sensors record pressure levels during these processes, providing valuable data for your doctor.

16 services16 patients

Electronic assessment of bladder emptying 51741

Electronic assessment of bladder emptying is a non-invasive test that measures how well your bladder functions. It uses ultrasound technology to create images of your bladder before and after you use the restroom, helping to identify any issues with bladder emptying.

16 services16 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

15 services14 patients

Ultrasonic guidance for needle placement 76942

Ultrasonic guidance for needle placement is a technique where sound waves create images that help accurately position the needle during procedures. This method ensures precision, minimizes discomfort, and increases safety.

14 services14 patients

Destruction of prostate tissue using radiofrequency induced heated water vapor 53854

This procedure involves the use of heated water vapor to eliminate unwanted tissue in a certain region within your body. The heat is produced by radiofrequency energy. This method is less invasive, usually resulting in a quicker recovery time.

13 services13 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

12 services11 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Harrison Medical Center

Acute Care Hospitals · Bremerton, WA

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number500039

Location2520 Cherry AvenueBremerton, WA 98310 · Kitsap County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 86301 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

$127.71 typical visit price

range $55.44 – $168.60

Typical copayment $31.92 (range $13.86 – $42.15)

Most-billed visit code 99204

Established Patient

$69.24 typical visit price

range $17.72 – $137.41

Typical copayment $17.31 (range $4.43 – $34.35)

Most-billed visit code 99213

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.

75/100

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

Scored as part of a group practice

Reported Quality Measures

Documentation of Current Medications in the Medical Record

Percentage of visits for patients aged 18 years and older for which the eligible professional or eligible clinician attests to documenting a list of current medications using all immediate resources available on the date of the encounter.

92%2,179 patients4/55-star benchmark: 100%

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.

51%438 patients1/55-star benchmark: 99%

Health Information Exchange

The MIPS eligible clinician that transitions or refers their patient to another setting of care or health care clinician (1) uses CEHRT to create a summary of care record; and (2) electronically transmits such summary to a receiving health care clinician for…

42%31 patients2/55-star benchmark: 88%

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.

99%515 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…

23%921 patients1/55-star benchmark: 97%

Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention

Percentage of patients aged 18 years and older who were screened for tobacco use one or more times within 24 months AND who received tobacco cessation intervention if identified as a tobacco user

Patients screenedForUse: 91% · 463 patients

Patients tobacco: 80% · 463 patients

2%51 patients1/55-star benchmark: 98%

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…

78%967 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…

27%967 patients2/55-star benchmark: 89%

Use of High-Risk Medications in the Elderly

Percentage of patients 65 years of age and older who were ordered high-risk medications. Two rates are submitted. 1) Percentage of patients who were ordered at least one high-risk medication.

Lower rates are better for this measure.

Patients 2+: 0% · 298 patients

2%298 patients4/55-star benchmark: 100%

View, Download, or Transmit (VDT)

At least one patient seen by the MIPS eligible clinician during the performance period (or patient-authorized representative) views, downloads or transmits their health information to a third party during the performance period.

17%967 patients

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

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

Intermittent urinary catheter; straight tip, with or without coating (teflon, silicone, silicone elastomer, or hydrophilic, etc.), each A4351

DME-Orthotic Devices · category DF008N

6 suppliers25 claims2,575 services$1.75 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 12

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

DR. PAUL M MALCZAK DO

Psychiatry & Neurology (Neurology)