Doctor profile · Federal record

Dr. Mary Massieu, DNP, FNP -C

Family Nurse Practitioner (CMS: Nurse Practitioner) · Family Nurse Practitioner · Dewey, AZ

  • NPI 1144644287
  • Accepts Medicare
  • 20 yrs in practice
  • Licensed in 2 states
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
12075 E State Route 69
Dewey, AZ 863274517
(928) 777-9600
fax (602) 218-4443
Mailing address
14600 S. Waterbury Street, Suite A & B
Mayer, AZ 86333

Credentials & registration

NPPES · NUCC
NPI registered
February 2014 — 12 yrs on file
Profile last updated
October 19, 2024
Year of graduation
2006 — 20 yrs since
Specialty taxonomy
363LF0000X — NUCC code
State licenses (2)
Arizona #226377 · Florida #ARNP2936392

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1144644287. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
4,123
Distinct HCPCS
10
Medicare allowed
$199,718
HCPCS Description Services Patients Avg allowed
99490 Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month 800 126 $51
99214 Established patient office or other outpatient visit, 30-39 minutes 548 140 $105
96127 Assessment of emotional or behavioral problems 328 38 $4
99439 Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month 225 76 $39
99457 Management using the results of remote vital sign monitoring per calendar month, first 20 minutes 175 34 $40
99458 Management using the results of remote vital sign monitoring per calendar month, each additional 20 minutes 138 27 $32
96372 Injection of drug or substance under skin or into muscle 124 22 $12
80307 Testing for presence of drug, by chemistry analyzers 106 18 $61
G0447 Face-to-face behavioral counseling for obesity, 15 minutes 104 36 $21
99454 Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days 95 19 $40

In context: peer comparison

Among 2 peers in Dewey Family Nurse Practitioner, average services per provider: 106. This provider delivers 39× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$699
Transactions
25
Manufacturers
13
Payer (manufacturer) Industry Txns Amount
AstraZeneca Pharmaceuticals Lp 5 $309.04
Indivior INC. 4 $88.19
Novo Nordisk INC 2 $44.12
Braeburn INC. 2 $38.54
Pfizer INC. 2 $37.50
Boston Scientific Corporation 1 $35.78
Amgen INC. 2 $30.56
GlaxoSmithKline, LLC. 2 $30.25
Bayer Healthcare Pharmaceuticals INC. 1 $19.95
Abbvie INC. 1 $18.03
Exact Sciences Corporation 1 $17.97
Mylan Specialty L.P. 1 $15.85
Collegium Pharmaceutical, INC. 1 $13.59

By nature of payment

Food and Beverage
$699

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
2,209
Patients
531
Total drug cost
$48,983
Drug Type Claims Patients Total cost
Lisinopril Generic 252 72 $2,485
Atorvastatin Calcium Generic 222 61 $3,794
Gabapentin Generic 202 51 $5,362
Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) Brand 198 31 $7,259
Levothyroxine Sodium Generic 195 54 $3,367
Amlodipine Besylate Generic 143 37 $1,691
Losartan Potassium Generic 143 37 $3,048
Albuterol Sulfate Hfa (Albuterol Sulfate) Brand 137 40 $3,792
Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) Brand 135 17 $5,567
Omeprazole Generic 124 31 $2,462

Frequently asked questions

Auto-generated from federal data
What is Dr. Mary Massieu's medical specialty?
Dr. Mary Massieu practices Family Nurse Practitioner in Dewey, AZ.
Where does Dr. Mary Massieu practice?
Dr. Mary Massieu practices at 12075 E State Route 69, Dewey, AZ 863274517. Office phone: 9287779600.
What is Dr. Mary Massieu's NPI?
Dr. Mary Massieu's National Provider Identifier (NPI) is 1144644287, issued by NPPES.
Does Dr. Mary Massieu accept Medicare assignment?
Yes. Dr. Mary Massieu accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mary Massieu commonly perform?
Top Medicare-reported procedures in 2023: Chronic care management services (HCPCS 99490); Established patient office or other outpatient visit (HCPCS 99214); Assessment of emotional or behavioral problems (HCPCS 96127). Source: CMS Medicare Physician & Other Practitioners file.