Independent US Healthcare Provider Directory & Public Medical Database Patient Guides

Dr. William Larry Davidson , MD

Allergy & Immunology • Daphne, AL

Active NPI 1578583191 Individual Practitioner Male Practitioner Accepts Medicare assignment
Practice location in NPPES

8725 County Road 64
Daphne, AL 36526

Call 2516251370 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

8725 County Road 64

Daphne, AL 36526

Telephone 2516251370
Fax 2516251380
Organization at the Same NPPES Address or Phone
Pulmonary Associates Of Mobile Pc Facility NPI 1427253061

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

NPPES lists 3 distinct additional practice-address records in Mobile, AL. See the list

Source: CMS NPPES NPI Registry, practice location records; release date unavailable.

CMS Doctors and Clinicians lists 1 group name: Pulmonary Associates Of Mobile Pc. See the list

Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.

Listings do not confirm current availability, employment or a shared ownership network.

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File

Medical School

University Of South Alabama College Of Medicine

Graduation Year

2001

Medicare patients

188 people with Original Medicare in 2024

Different Original Medicare patients in 2024; counts below 11 are hidden; this does not show availability or quality.

Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.

Medicare-allowed amount

About $88,212 in 2024

The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.

What this does not show: Medicare-allowed amount

This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.

Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.

Paid by Medicare

About $67,336 in 2024

The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.

What this does not show: Paid by Medicare

This is not the clinician's income and not a measure of quality.

Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.

30-day fills

1,398 standardized 30-day fills in 2024

CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.

What this does not show: 30-day fills

It is not a count of patients and not a measure of quality.

Part D drug cost

$1,405,911 in 2024

The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.

What this does not show: Part D drug cost

A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.

Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.

Open Payments general payments, program year 2025

All general payments: $7,617.46 across 170 records.

By nature of payment (3 largest of 5)

  • Food and Beverage: $3,740.58 across 165 records.
  • Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program: $2,312.00 across 1 record.
  • Consulting Fee: $1,446.00 across 1 record.

Reporting-company totals (3 largest of 23)

  • Sanofi and Genzyme US Companies: $4,128.62 across 19 records.
  • AstraZeneca Pharmaceuticals LP: $660.03 across 22 records.
  • Takeda Pharmaceuticals U.S.A., Inc.: $340.01 across 10 records.

A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.

See the full table

Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).

Guide: How to read an Open Payments record

Years since graduation

25 years (graduated 2001)

CMS Doctors and Clinicians data list 2001 as the year this clinician finished professional school.

What this does not show: Years since graduation

It is not the number of years in practice, and more years does not mean better care.

Source: CMS Doctors and Clinicians National Downloadable File.

NPI first issued

2006

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Accepts Medicare assignment

CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Davidson has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Davidson as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in Daphne and Alabama

Billing and prescribing volume is not a quality rating.

Medicare Part B services

More Medicare Part B services than 60% of clinicians listed under Allergy & Immunology in Alabama (2024, 20 clinicians with data). Median for this group: 1,268. Middle half: 160 to 5,892.

Too few clinicians listed under Allergy & Immunology in Daphne have Medicare Part B data for 2024 to compare.

Medicare-allowed amount

A higher Medicare-allowed amount than 70% of clinicians listed under Allergy & Immunology in Alabama (2024, 20 clinicians with data). Median for this group: $30,110. Middle half: $9,043 to $88,291.

Too few clinicians listed under Allergy & Immunology in Daphne have Medicare Part B data for 2024 to compare.

Paid by Medicare

A higher Medicare payment amount than 75% of clinicians listed under Allergy & Immunology in Alabama (2024, 20 clinicians with data). Median for this group: $21,220. Middle half: $6,017 to $66,011.

Too few clinicians listed under Allergy & Immunology in Daphne have Medicare Part B data for 2024 to compare.

Medicare Part D prescriptions

More Part D prescriptions than 70% of clinicians listed under Allergy & Immunology in Alabama (2024, 20 clinicians with data). Median for this group: 585. Middle half: 221 to 1,132.

Too few clinicians listed under Allergy & Immunology in Daphne have Medicare Part D data for 2024 to compare.

Part D drug cost

A higher Part D drug cost than 70% of clinicians listed under Allergy & Immunology in Alabama (2024, 20 clinicians with data). Median for this group: $565,441. Middle half: $187,289 to $1,455,264.

Too few clinicians listed under Allergy & Immunology in Daphne have Medicare Part D data for 2024 to compare.

2 active clinicians are listed under Allergy & Immunology with a practice address in Daphne, AL (27 in Alabama).

Addresses are self-reported to NPPES and may be out of date.

Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo · Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments · Program Year 2025
Disclosure Year:

Program year 2025 (payments made January 1 – December 31, 2025): 170 records totaling $7,617.46.

Manufacturer Payment Nature Product Type Amount ($)
Sanofi and Genzyme US Companies
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program
Cash or cash equivalent
DUPIXENT General $2,312.00
Sanofi and Genzyme US Companies
Consulting Fee
Cash or cash equivalent
— General $1,446.00
AstraZeneca Pharmaceuticals LP
Food and Beverage
In-kind items and services
TEZSPIRE General $129.45
Eli Lilly and Company
Food and Beverage
Cash or cash equivalent
EBGLYSS General $118.80
AstraZeneca Pharmaceuticals LP
Food and Beverage
In-kind items and services
AIRSUPRA General $81.80
Sanofi and Genzyme US Companies
Food and Beverage
In-kind items and services
DUPIXENT General $75.70
Regeneron Pharmaceuticals, Inc.
Education
In-kind items and services
DUPIXENT General $73.50
Organon LLC
Food and Beverage
In-kind items and services
VTAMA General $59.24
Takeda Pharmaceuticals U.S.A., Inc.
Food and Beverage
In-kind items and services
HYQVIA General $45.80
Takeda Pharmaceuticals U.S.A., Inc.
Food and Beverage
In-kind items and services
CUVITRU General $39.18
Takeda Pharmaceuticals U.S.A., Inc.
Food and Beverage
In-kind items and services
CUVITRU General $38.24
Takeda Pharmaceuticals U.S.A., Inc.
Food and Beverage
In-kind items and services
HYQVIA General $35.87
Sanofi and Genzyme US Companies
Food and Beverage
In-kind items and services
DUPIXENT General $35.75
Sanofi and Genzyme US Companies
Food and Beverage
In-kind items and services
DUPIXENT General $35.18
BioCryst Pharmaceuticals, Inc.
Food and Beverage
In-kind items and services
ORLADEYO General $34.37
CSL Behring
Food and Beverage
In-kind items and services
Hizentra General $34.25
Genentech, Inc.
Food and Beverage
In-kind items and services
Xolair General $33.64
Takeda Pharmaceuticals U.S.A., Inc.
Food and Beverage
In-kind items and services
CUVITRU General $33.17
Takeda Pharmaceuticals U.S.A., Inc.
Food and Beverage
In-kind items and services
CUVITRU General $32.98
Novartis Pharmaceuticals Corporation
Food and Beverage
In-kind items and services
XOLAIR General $32.32
Takeda Pharmaceuticals U.S.A., Inc.
Food and Beverage
In-kind items and services
CUVITRU General $32.01
Novartis Pharmaceuticals Corporation
Food and Beverage
In-kind items and services
— General $31.99
Sanofi and Genzyme US Companies
Food and Beverage
In-kind items and services
DUPIXENT General $31.92
Insmed, Inc.
Food and Beverage
In-kind items and services
Arikayce General $30.73
Grifols Shared Services North America, Inc.
Food and Beverage
In-kind items and services
Prolastin-C Liquid General $30.59

(top 25 shown)

Source: CMS Open Payments, program year 2025, released June 30, 2026.

Performed Procedures & Service Volume

Services billed to Original Medicare Part B in 2024.

CMS Part B · Data Year 2024
Reporting Year:

CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.

HCPCS Code Services Patients Submitted Charge Medicare Allowed
95004 Test for allergy using allergenic extract
1,828 41 $10.00 $3.07
95165 Professional service for preparation and provision of 1 or more antigens
1,437 14 $16.00 $12.67
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
245 137 $153.00 $114.55
95024 Test for allergy using allergenic extract injected into skin
213 13 $11.00 $6.77
94664 Evaluation of use of breathing device
110 67 $32.00 $14.79
94200 Test to measure largest amount of air breathed in an out
95 69 $50.00 $12.59
94375 Test to measure rate of airflow
95 69 $52.00 $33.72
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
77 77 $207.00 $151.54
94729 Test to examine how well the lungs exchange gases
69 54 $100.00 $48.90
G2211 Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's
62 51 $19.00 $15.16
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
50 32 $181.00 $164.17
96372 Injection of drug or substance under skin or into muscle
42 20 $28.00 $12.76
71046 X-ray of chest, 2 views
40 39 $66.18 $28.95
94727 Test to determine lung volumes using gas dilution or washout
39 32 $100.00 $39.02
94726 Test to determine lung volumes using sensors
30 26 $100.00 $48.45

Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits

Submitted charges are billed amounts, not a price quote for your visit.

Medicare Part D Prescribing Profile & Medications

Medicare Part D prescriptions filled, including refills, in 2024.

CMS Part D · Data Year 2024
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Albuterol Sulfate Hfa Albuterol Sulfate 99 2,309 $1,909.41 61
Trelegy Ellipta Fluticasone/Umeclidin/Vilanter 94 3,840 $79,406.27 25
Prednisone Prednisone 85 1,324 $193.19 65
Montelukast Sodium Montelukast Sodium 77 6,087 $958.60 28
Dupixent Pen Dupilumab 58 1,694 $225,476.92 —
Levocetirizine Dihydrochloride Levocetirizine Dihydrochloride 56 2,710 $465.32 12
Cefuroxime Cefuroxime Axetil 53 662 $1,229.56 48
Breztri Aerosphere Budesonide/Glycopyr/Formoterol 46 1,500 $29,844.84 20
Fluticasone Propionate Fluticasone Propionate 45 2,260 $868.75 14
Epinephrine Epinephrine 42 815 $8,408.99 38
Arnuity Ellipta Fluticasone Furoate 39 1,170 $8,482.70 11
Famotidine Famotidine 38 2,430 $644.88 18
Wixela Inhub Fluticasone Propion/Salmeterol 36 1,140 $2,099.16 —
Breo Ellipta Fluticasone/Vilanterol 32 960 $12,262.94 —
Dupixent Syringe Dupilumab 31 868 $116,272.46 —
Hizentra Immun Glob G(Igg)/Pro/Iga 0-50 25 700 $58,410.99 —
Azithromycin Azithromycin 20 100 $69.74 17
Omeprazole Omeprazole 19 1,650 $341.27 —
Cuvitru Immun Glob G(Igg)/Gly/Iga Ov50 17 476 $132,595.64 —
Triamcinolone Acetonide Triamcinolone Acetonide 14 460 $139.73 11
Dulera Mometasone/Formoterol 14 570 $6,022.10 —
Azelastine Hcl Azelastine Hcl 13 720 $526.02 —
Xolair Omalizumab 13 364 $36,316.54 —
Clobetasol Propionate Clobetasol Propionate 12 550 $522.63 —
Mupirocin Mupirocin 12 296 $136.64 —

(top 25 shown)

Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Allergy & Immunology Primary Specialty

NUCC Taxonomy Code: 207K00000X

License # reported to NPPES AL 27233

An allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Selected examples of such conditions include asthma, anaphylaxis, rhinitis, eczema, and adverse reactions to drugs, foods, and insect stings as well as immune deficiency diseases (both acquired and congenital), defects in host defense, and problems related to autoimmune disease, organ transplantation, or malignancies of the immune system.

Internal Medicine - Allergy & Immunology

NUCC Taxonomy Code: 207RA0201X

License # reported to NPPES AL 27233

An internist doctor of osteopathy that specializes in the treatment of allergy and immunologic disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine can obtain a Certificate of Special Qualifications in the field of Allergy & Immunology.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Alabama State Board of Medical Examiners.
Look Up on State Board Site

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid ID
213237 (AL)
Medicaid ID
221413 (AL)
Medicaid ID
220933 (AL)
Medicaid ID
9998923 (AL)
Medicaid ID
212916 (AL)
Other Identifier Bcbs
515-41041 (AL)
Other Identifier Bcbs
512-05653 (AL)
Other Identifier Rr Medicare
P00632093 (AL)
Other Identifier Ms Medicaid
02277060 (MS)
Other Identifier Bcbs
511-95114 (AL)

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - ALLERGY/IMMUNOLOGY

Medicare Enrollment ID

I20060410000656

Enrollment State Jurisdiction

AL

PECOS Control ID

3173532793

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Medicare Group Practice Enrollments

Source: CMS Doctors and Clinicians National Downloadable File

Pulmonary Associates Of Mobile Pc

100 Memorial Hospital Dr, Mobile, AL 366081128

Pulmonary Associates Of Mobile Pc

100 Memorial Hospital Dr, Mobile, AL 366081128

Phone: 2513436848

Pulmonary Associates Of Mobile Pc

5955 Airport Blvd, Mobile, AL 366083135

Phone: 2516330573

Pulmonary Associates Of Mobile Pc

1703 N Bunner St, Foley, AL 365352229

Phone: 2516251370

Secondary Practice Locations

2001 Spring Hill Ave

Mobile, AL 366073326

Phone: 2514333344

5955 Airport Blvd

Mobile, AL 366083135

Phone: 2516330573

100 Memorial Hospital Dr Ste 1a

Mobile, AL 366081128

Phone: 2513436848

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

2 listed
Dr. Karen Barker , MD

Allergy & Immunology

NPI 1629268263

Doctor of Medicine (M.D.)

Daniel Gardner , FNP

Nurse Practitioner - Family

NPI 1275913279

Family Nurse Practitioner

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

15 Historical Events
🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) June 28, 2019

Internal Medicine (license number reported to NPPES: AL 27233)

📍
Updated Practice Location May 25, 2018

Registered at 8725 COUNTY ROAD 64, DAPHNE, AL 36526 (Tel: 2516251370)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) March 17, 2018

Internal Medicine (license number reported to NPPES: AL 27233)

✅
NPI Profile Active January 13, 2018

NPI status registered as active in NPPES database

📍
Updated Practice Location January 13, 2018

Registered at 8725 COUNTY ROAD 64, DAPHNE, AL 365266061 (Tel: 2516251370)

📍
Updated Business Mailing Address January 13, 2018

Registered at PO BOX 7987, MOBILE, AL 366700987 (Tel: 2516330573)

👤
Provider Name / Credentials Updated January 13, 2018

Recorded as WILLIAM DAVIDSON, MD

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) January 13, 2018

Internal Medicine (license number reported to NPPES: AL 27233)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) January 13, 2018

Allergy & Immunology (license number reported to NPPES: AL 27233)

✅
NPI Profile Active December 11, 2009

NPI status registered as active in NPPES database

📍
Practice Location (Initial Record) December 11, 2009

Registered at 7101 HIGHWAY 90, SUITE 201, DAPHNE, AL 36526 (Tel: 2516251370)

📍
Business Mailing Address (Initial Record) December 11, 2009

Registered at PO BOX 7987, MOBILE, AL 366700987 (Tel: 2516330573)

👤
Provider Name / Credentials (Initial Record) December 11, 2009

Recorded as WILLIAM DAVIDSON, MD

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) December 11, 2009

Allergy & Immunology (license number reported to NPPES: AL 27233)

🟢
Initial NPI Registration & Enumeration July 19, 2006

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1578583191
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: July 19, 2006
Last Update: June 28, 2019
Sole Proprietor: No

Mailing Address

Po Box 7987

Mobile, AL 366700987

Phone: 2516330573

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.